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NATIONAL FEATURE REGISTRY · ADDITIONAL FEATURES · F1–F6 · EW-F6-V1
Explore public-data features across all 35,672 LSOAs. Decile boundaries are fixed nationally, so every local view uses the same scale.
This panel records readiness at the F6 source freeze. Open the completed F7 collision screen and expanded ranking.
F1–F6 · NATIONAL SOURCE AND BAND RELEASE
Eleven previously deferred candidates were assessed across the full England-and-Wales reference: 2 admitted to national bands, 4 available as diagnostics and 5 still awaiting source inputs.
F1 froze the definitions and gates. F2–F5 acquired and checked activity, claimant, terrain and weather sources. F6 applied one national ranking to each eligible addition. The earlier feature values, bands and collision results remain unchanged.
| Phase / feature | National raw coverage | Decision | Remaining condition |
|---|---|---|---|
| F2 · School site density near roads | 0 / 35,6720.00% | deferred0 banded | 87 eligible English establishments lack source coordinates Welsh independent register has 78 entries; only 45 have matching GIAS coordinates and primary/secondary age scope is unresolved Conflicting school UPRN coordinates require review National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. |
| F2 · Public transport access-site density near roads | 35,646 / 35,67299.93% | banded35,646 banded | Ready for F7 collision screening. |
| F3 · Lagged Claimant Count rate, ages 16-64 (2021) | 33,766 / 35,67294.66% | diagnostic only0 banded | 1,906 LSOA2021 areas require split/complex disaggregation; the ONS exact-fit lookup provides correspondence, not claimant allocation weights. No independently validated within-parent claimant distribution is available. Centroid best-fit and population-proportional splits are not substituted for observed local counts. National and geographically stratified coverage fall short of the frozen F1 band-release thresholds. National or subgroup numeric-coverage gate failed. Source measurement/comparability gate unresolved. |
| F3 · Annual Claimant Count rate change, ages 16-64 (2021 minus 2020) | 33,766 / 35,67294.66% | diagnostic only0 banded | 1,906 LSOA2021 areas require split/complex disaggregation; the ONS exact-fit lookup provides correspondence, not claimant allocation weights. No independently validated within-parent claimant distribution is available. Centroid best-fit and population-proportional splits are not substituted for observed local counts. National and geographically stratified coverage fall short of the frozen F1 band-release thresholds. National or subgroup numeric-coverage gate failed. Source measurement/comparability gate unresolved. |
| F4 · Road-weighted terrain-gradient proxy | 35,672 / 35,672100.00% | diagnostic only0 banded | Independent road-surface grade validation absent, including bridges, tunnels, urban cuttings and upland minor roads. Structure tags do not establish complete bridge identification; untagged roads cannot be assumed to be ground-level. Source measurement/comparability gate unresolved. |
| F4 · Road-length share above 8% terrain-gradient proxy | 35,672 / 35,672100.00% | diagnostic only0 banded | Independent road-surface grade validation absent, including bridges, tunnels, urban cuttings and upland minor roads. Structure tags do not establish complete bridge identification; untagged roads cannot be assumed to be ground-level. Source measurement/comparability gate unresolved. |
| F5 · Road-weighted heat days >=25C | 0 / 35,6720.00% | deferred0 banded | Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. |
| F5 · Road-weighted heat days >=30C | 0 / 35,6720.00% | deferred0 banded | Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. |
| F5 · Road-weighted heavy-rain days | 35,365 / 35,67299.14% | banded35,365 banded | Ready for F7 collision screening. |
| F5 · Road-weighted wet-day rainfall intensity | 0 / 35,6720.00% | deferred0 banded | Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. |
| F5 · Road-weighted snow-lying days | 0 / 35,6720.00% | deferred0 banded | Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. |
A feature decile describes the source value. It is not a collision-risk decile. F7 must test added features against STATS19 collisions and matched miles before predictive power can be reported. Insurer claims validation remains a separate future trial.
Frozen F1 rulesNational coverage and missingness auditReproduction kitExisting Phase 5 predictive evidence
FEATURE PREPARATION · COLLISION EVIDENCE IS A SEPARATE STAGE
F1–F6 adds audited source calculations to the national reference. New bands are admitted only after coverage, missingness and measurement checks. The original 38 banded features and their Phase 5 collision results are preserved; the new additions have not yet entered F7 testing.
Every feature keeps all 35,672 master rows. Missing and diagnostic values remain explicit; local filters never create new deciles.
F7 will assess admitted additions against the frozen collision–mileage baseline. F1–F6 does not estimate new predictive effects or build insurer risk indices.
Complete coverage describes the calculation. Census commuting is pandemic-era resident context; connectivity is modelled accessibility. Neither measures actual pedestrian or cyclist flows. The new deciles are research features, with no demonstrated accident or insurer-claims effect.
This milestone provides research inputs, not validated accident-risk indices. The Phase 3 national collision–mileage panel is available with explicit exposure-quality gates. The existing regional mileage pilot does not determine these bands.
ONE SCALE ACROSS BOTH COUNTRIES
Numeric terrain-context diagnostics only. No proven road-surface grade; 50/100m and tagged-structure exclusion sensitivities are internal consistency checks. Independent road-surface grade validation absent, including bridges, tunnels, urban cuttings and upland minor roads. Structure tags do not establish complete bridge identification; untagged roads cannot be assumed to be ground-level. Source measurement/comparability gate unresolved.
terrain proxy · National bands withheld pending recorded gates
National bands withheld; raw diagnostic values only. A higher feature decile does not automatically mean higher accident risk. Ties stay together, so band sizes can differ.
Loading the frozen national lookup…
Withheld by frozen coverage, missingness or measurement gate. Display values are rounded; downloads retain full precision. Equality stays in the lower band. Duplicate cut-offs and empty bands are retained.
| Boundary | Upper value of lower band |
|---|
Definition: 100 * terrain-covered road metres with sampled gradient strictly above8% / terrain-covered road metres.
Denominator definition: Terrain-covered metres of all frozen non-fictitious OS road geometry; >=99% mapped-road coverage required per LSOA.
Quality flags: diagnostic only; not collision tested in F7; not claims validated; retrospective source vintage.
Historical use: This source edition and band definition were frozen in October 2026. Historical forecast-origin availability is not established. Exposure: Shared inputs with pilot exposure (population/road/rurality); sensitivity required.
Download full-precision cut-offsCOMPLETE GEOGRAPHY · EXPLICIT FEATURE GAPS
“Complete” describes this source snapshot and calculation. It does not mean the feature predicts accidents. Missing frost coverage and deferred features keep their master rows.
| Feature | Status | England valid | Wales valid | Period / requirement |
|---|---|---|---|---|
| No qualificationsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsResidents aged 16+. Not age-adjusted; age composition is a separate control. Source |
| Level 4+ qualificationsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsSource |
| Social rented householdsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Private rented householdsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsSource |
| Owner occupied householdsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsOwned outright or with mortgage; shared ownership excluded. Tenure shares are dependent. Source |
| Overcrowded householdsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Unemployment among economically active adultsSocio-demographic · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsIncludes economically active full-time students in numerator and denominator. Census lockdown-era measure. Source |
| Terraced housingHousing and vehicles · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Flats and converted/commercial accommodationHousing and vehicles · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsPurpose-built, converted/shared houses, converted buildings and commercial buildings. Not observed garaging. Source |
| Households without a car or vanHousing and vehicles · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Cars/vans per household · lower boundHousing and vehicles · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsTop-coded 3+ category is assigned 3. This is a lower bound, not an exact vehicle count. Source |
| Population densityBaseline controls · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsSource |
| Residents aged 15–24Baseline controls · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Residents aged 65+Baseline controls · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsSource |
| Residents aged 0–14Baseline controls · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsSource |
| Motorway share of mapped road lengthRoad layout · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2026-04 |
| A-road share of mapped road lengthRoad layout · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2026-04 |
| Minor/local share of mapped road lengthRoad layout · control | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2026-04Definition & limitsB, minor, local and access-road functions, including restricted access. Not traffic-weighted. Source |
| Junctions per mapped road kilometreRoad layout · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2026-04Definition & limitsOS junction nodes only. Pseudo nodes, road ends and roundabout nodes excluded. Source |
| Roundabout nodes per mapped road kilometreRoad layout · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2026-04Definition & limitsOS roundabout node count; zero group plus positive-value deciles. Not a manually audited roundabout inventory. Source |
| Mapped road sinuosityRoad layout · candidate | provisionalbanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2026-04Definition & limitsLength-weighted full-link length/endpoint distance, excluding closed and roundabout links. Generalised geometry proxy; not bend radius. Source |
| Road-weighted air-frost daysWeather · candidate | provisionalbanded · 35,365 banded | 33,505 / 33,755250 unavailable | 1,860 / 1,91757 unavailable | 1991–2020Definition & limits1991–2020 normal, public 2 km HadUK-Grid v1.1.0.0. At least 99% mapped road coverage. Not road ice or annual 2022–2025 weather. Source |
| Lagged Claimant Count rate, ages 16-64 (2021)Socio-demographic · candidate | provisionaldiagnostic only · 0 banded | 31,907 / 33,7551,848 unavailable | 1,859 / 1,91758 unavailable | 2021Definition & limitsRetrospective lagged context, not an as-of-2022 forecast. Current revised 2020/2021 populations and historical claimant extracts. Only unchanged/exact-merge geographies are numeric; all master areas retained. Claimant count is an administrative benefit measure, not unemployment. Published source counts are rounded; no individual-level precision is implied. 1,906 LSOA2021 areas require split/complex disaggregation; the ONS exact-fit lookup provides correspondence, not claimant allocation weights. No independently validated within-parent claimant distribution is available. Centroid best-fit and population-proportional splits are not substituted for observed local counts. National and geographically stratified coverage fall short of the frozen F1 band-release thresholds. National or subgroup numeric-coverage gate failed. Source measurement/comparability gate unresolved. Source |
| Annual Claimant Count rate change, ages 16-64 (2021 minus 2020)Socio-demographic · candidate | provisionaldiagnostic only · 0 banded | 31,907 / 33,7551,848 unavailable | 1,859 / 1,91758 unavailable | 2020 and 2021Definition & limitsRetrospective lagged context, not an as-of-2022 forecast. Current revised 2020/2021 populations and historical claimant extracts. Only unchanged/exact-merge geographies are numeric; all master areas retained. Claimant count is an administrative benefit measure, not unemployment. Published source counts are rounded; no individual-level precision is implied. 1,906 LSOA2021 areas require split/complex disaggregation; the ONS exact-fit lookup provides correspondence, not claimant allocation weights. No independently validated within-parent claimant distribution is available. Centroid best-fit and population-proportional splits are not substituted for observed local counts. National and geographically stratified coverage fall short of the frozen F1 band-release thresholds. National or subgroup numeric-coverage gate failed. Source measurement/comparability gate unresolved. Source |
| Harmonised income deprivationSocio-demographic · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | edition-specificOutstanding requirementEnglish IMD and Welsh WIMD are not comparable. Benefit coverage, denominators and periods are unreconciled. Native ranks are not pooled. Source |
| Harmonised employment deprivationSocio-demographic · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | edition-specificOutstanding requirementCountry-specific constructions unreconciled. Census unemployment is retained as a separate measure, not a replacement deprivation index. Source |
| Road-weighted terrain-gradient proxyRoad layout · candidate | provisionaldiagnostic only · 0 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | OS Terrain50 July2026; OS Open Roads April2026; retrospective geographic contextDefinition & limitsNumeric terrain-context diagnostics only. No proven road-surface grade; 50/100m and tagged-structure exclusion sensitivities are internal consistency checks. Independent road-surface grade validation absent, including bridges, tunnels, urban cuttings and upland minor roads. Structure tags do not establish complete bridge identification; untagged roads cannot be assumed to be ground-level. Source measurement/comparability gate unresolved. Source |
| Road-length share above 8% terrain-gradient proxyRoad layout · candidate | provisionaldiagnostic only · 0 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | OS Terrain50 July2026; OS Open Roads April2026; retrospective geographic contextDefinition & limitsNumeric terrain-context diagnostics only. No proven road-surface grade; 50/100m and tagged-structure exclusion sensitivities are internal consistency checks. Independent road-surface grade validation absent, including bridges, tunnels, urban cuttings and upland minor roads. Structure tags do not establish complete bridge identification; untagged roads cannot be assumed to be ground-level. Source measurement/comparability gate unresolved. Source |
| HGV traffic shareTraffic and activity · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | lagged annualOutstanding requirementNational all-road LSOA vehicle-class allocation not validated. Existing major-road counts and regional mileage are insufficient. Source |
| Van traffic shareTraffic and activity · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | lagged annualOutstanding requirementSame national all-road vehicle-mix gap; retain counted/estimated flags. Source |
| Motorcycle traffic shareTraffic and activity · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | lagged annualOutstanding requirementSame national all-road vehicle-mix gap; collision-involved vehicles must not supply this feature. Source |
| Bus and coach traffic shareTraffic and activity · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | lagged annual |
| Motor traffic intensityTraffic and activity · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | lagged annualOutstanding requirementNational all-road LSOA exposure remains a Phase 3 dependency. Physical OS road length is not a traffic estimate. Source |
| School site density near roadsTraffic and activity · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | 2026-10-13 GIAS/NaPTAN snapshots; Welsh school register2026-04-23; roadsApril2026Outstanding requirementRetrospective spatial context; no2022 as-of eligibility. National bands require separate F6 coverage and missing-rank gates. 87 eligible English establishments lack source coordinates Welsh independent register has 78 entries; only 45 have matching GIAS coordinates and primary/secondary age scope is unresolved Conflicting school UPRN coordinates require review National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. Source |
| Public transport access-site density near roadsTraffic and activity · candidate | provisionalbanded · 35,646 banded | 33,733 / 33,75522 unavailable | 1,913 / 1,9174 unavailable | 2026-10-13 GIAS/NaPTAN snapshots; Welsh school register2026-04-23; roadsApril2026Definition & limitsRetrospective spatial context; no2022 as-of eligibility. National bands require separate F6 coverage and missing-rank gates. Source |
| Road-weighted snow-lying daysWeather · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | 1991-2020Outstanding requirementHadUK station-interpolated climate estimate, road-length weighted. Exact source threshold and 1991-2020 period preserved; missing road coverage remains unavailable. Higher value is more weather exposure, not established collision risk. Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. Source |
| Road-weighted heavy-rain daysWeather · candidate | provisionalbanded · 35,365 banded | 33,505 / 33,755250 unavailable | 1,860 / 1,91757 unavailable | 1991-2020Definition & limitsHadUK station-interpolated climate estimate, road-length weighted. Exact source threshold and 1991-2020 period preserved; missing road coverage remains unavailable. Higher value is more weather exposure, not established collision risk. 307 LSOAs fail the 99% road-coverage requirement and remain unavailable. Exact source and geometry gates passed; F6 national missing-rank sensitivity and concentrated-missingness review pending. Source |
| Road-weighted wet-day rainfall intensityWeather · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | 1991-2020Outstanding requirementHadUK station-interpolated climate estimate, road-length weighted. Exact source threshold and 1991-2020 period preserved; missing road coverage remains unavailable. Higher value is more weather exposure, not established collision risk. Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. Source |
| Households with 2+ cars or vansHousing and vehicles · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Households with 3+ cars or vansHousing and vehicles · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21 |
| Car/van driver commuting shareCommuting baseline · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsCensus 2021 lockdown/furlough context. Resident participation, not current travel, hybrid-working frequency or observed road flows. Denominator sums all ten away-from-home travel categories, including passengers and other methods. Source |
| Commutes of 20 km or moreCommuting baseline · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsCensus 2021 lockdown/furlough context. Resident participation, not current travel, hybrid-working frequency or observed road flows. Straight-line distance. Denominator includes only the eight known distance bands; excludes home/offshore/no fixed place/outside UK. Source |
| Working mainly at or from homeCommuting baseline · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsCensus 2021 lockdown/furlough context. Resident participation, not current travel, hybrid-working frequency or observed road flows. Denominator is all employed residents aged 16+ in TS061. Source |
| Walking commuting shareCommuting baseline · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsCensus 2021 lockdown/furlough context. Resident participation, not current travel, hybrid-working frequency or observed road flows. Share among residents travelling away from home, not pedestrian pressure in this LSOA. Source |
| Cycling commuting shareCommuting baseline · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2021-03-21Definition & limitsCensus 2021 lockdown/furlough context. Resident participation, not current travel, hybrid-working frequency or observed road flows. Share among residents travelling away from home, not cyclist pressure in this LSOA. Source |
| Public transport connectivityTransport accessibility · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | Q4 2024 reference; mixed source vintagesDefinition & limitsModelled access to destinations, not trips or flows. Q4 2024 workbook reference; mixed 2023–2025 inputs and NTS 2011–2020 preferences. Scores from different modes are not directly comparable. Published 29 September 2025. Source |
| Walking connectivityTransport accessibility · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | Q4 2024 reference; mixed source vintagesDefinition & limitsModelled access to destinations, not trips or flows. Q4 2024 workbook reference; mixed 2023–2025 inputs and NTS 2011–2020 preferences. Scores from different modes are not directly comparable. Published 29 September 2025. Source |
| Cycling connectivityTransport accessibility · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | Q4 2024 reference; mixed source vintagesDefinition & limitsModelled access to destinations, not trips or flows. Q4 2024 workbook reference; mixed 2023–2025 inputs and NTS 2011–2020 preferences. Scores from different modes are not directly comparable. Published 29 September 2025. Source |
| Driving connectivityTransport accessibility · candidate | completebanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | Q4 2024 reference; mixed source vintagesDefinition & limitsModelled access to destinations, not trips or flows. Q4 2024 workbook reference; mixed 2023–2025 inputs and NTS 2011–2020 preferences. Scores from different modes are not directly comparable. Published 29 September 2025. Source |
| Road-weighted heat days >=25CWeather · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | 1991-2020Outstanding requirementHadUK station-interpolated climate estimate, road-length weighted. Exact source threshold and 1991-2020 period preserved; missing road coverage remains unavailable. Higher value is more weather exposure, not established collision risk. Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. Source |
| Road-weighted heat days >=30CWeather · candidate | deferreddeferred · 0 banded | 0 / 33,75533,755 unavailable | 0 / 1,9171,917 unavailable | 1991-2020Outstanding requirementHadUK station-interpolated climate estimate, road-length weighted. Exact source threshold and 1991-2020 period preserved; missing road coverage remains unavailable. Higher value is more weather exposure, not established collision risk. Exact authorised CEDA inputs not acquired; registered-user authentication required. New 1km road/grid intersections required before optional NetCDF grid outputs can enter LSOA lookup. National or subgroup numeric-coverage gate failed. Missing-value rank sensitivity failed or no numeric values. Source measurement/comparability gate unresolved. Source |
| Road-weighted NO2Air quality · candidate | provisionalbanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2025; 2022–2024 sensitivity files separateDefinition & limitsRoad-weighted assessed annual ambient concentrations, ≥99% mapped-road coverage; April 2026 OS geometry. 2025 CMAQ-Urban replaces PCM, so years are not pooled into one trend. These are model estimates, not individual or roadside-monitor exposure. Source |
| Road-weighted PM2.5Air quality · candidate | provisionalbanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2025; 2022–2024 sensitivity files separateDefinition & limitsRoad-weighted assessed annual ambient concentrations, ≥99% mapped-road coverage; April 2026 OS geometry. 2025 CMAQ-Urban replaces PCM, so years are not pooled into one trend. These are model estimates, not individual or roadside-monitor exposure. Source |
| Vehicle-crime intensityCrime · candidate | provisionaldiagnostic only · 0 banded | 25,575 / 33,7558,180 unavailable | 1,052 / 1,917865 unavailable | September 2023–August 2026 (36 months)Definition & limitsDiagnostic own-territorial-force geolocated incidents; complete 36-month reporting and no contradictory Crime-ID allocation required. Census 2021 denominator is a frozen context proxy. Other-force/BTP and unlocated incidents are audited separately. National bands withheld because the national crime reference is incomplete. Vehicle crime includes theft of/from vehicles and interference; not theft only. Source |
| Burglary intensityCrime · candidate | provisionaldiagnostic only · 0 banded | 25,575 / 33,7558,180 unavailable | 1,052 / 1,917865 unavailable | September 2023–August 2026 (36 months)Definition & limitsDiagnostic own-territorial-force geolocated incidents; complete 36-month reporting and no contradictory Crime-ID allocation required. Census 2021 denominator is a frozen context proxy. Other-force/BTP and unlocated incidents are audited separately. National bands withheld because the national crime reference is incomplete. Published burglary is not wholly residential. Source |
| Criminal damage and arson intensityCrime · candidate | provisionaldiagnostic only · 0 banded | 25,575 / 33,7558,180 unavailable | 1,052 / 1,917865 unavailable | September 2023–August 2026 (36 months)Definition & limitsDiagnostic own-territorial-force geolocated incidents; complete 36-month reporting and no contradictory Crime-ID allocation required. Census 2021 denominator is a frozen context proxy. Other-force/BTP and unlocated incidents are audited separately. National bands withheld because the national crime reference is incomplete. Source |
| Non-vehicle recorded-crime intensityCrime · candidate | provisionaldiagnostic only · 0 banded | 25,575 / 33,7558,180 unavailable | 1,052 / 1,917865 unavailable | September 2023–August 2026 (36 months)Definition & limitsDiagnostic own-territorial-force geolocated incidents; complete 36-month reporting and no contradictory Crime-ID allocation required. Census 2021 denominator is a frozen context proxy. Other-force/BTP and unlocated incidents are audited separately. National bands withheld because the national crime reference is incomplete. Non-vehicle excludes vehicle crime and ASB; burglary and damage/arson overlap this total. Source |
| Road length at 20 mph or belowSpeed limits · candidate | provisionaldiagnostic only · 0 banded | 1,468 / 33,75532,287 unavailable | 79 / 1,9171,838 unavailable | 2026-10-11T20:21:06ZDefinition & limitsShare of classified eligible public motor-road length; ≥95% classified-length gate. Untagged, unresolved conditional/directional and variable limits remain unknown; bounds against all roads are supplied. No collision-derived limits. Authority segment validation remains outstanding. Current Welsh limits must not be backdated to before September 2023. Only 1,547 areas pass the tag-coverage gate (1,520 urban; 27 rural); primary national bands are withheld because this 4.3% coverage-selected reference is not representative. Source |
| Road length at 30 mph or belowSpeed limits · candidate | provisionaldiagnostic only · 0 banded | 1,468 / 33,75532,287 unavailable | 79 / 1,9171,838 unavailable | 2026-10-11T20:21:06ZDefinition & limitsShare of classified eligible public motor-road length; ≥95% classified-length gate. Untagged, unresolved conditional/directional and variable limits remain unknown; bounds against all roads are supplied. No collision-derived limits. Authority segment validation remains outstanding. Current Welsh limits must not be backdated to before September 2023. Only 1,547 areas pass the tag-coverage gate (1,520 urban; 27 rural); primary national bands are withheld because this 4.3% coverage-selected reference is not representative. Source |
| Bankruptcy rate · authority contextFinancial context · candidate | provisionalbanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2025 events; mid-2024 adult denominatorDefinition & limitsPublished 2025 rate inherited from 316 lower-tier reporting areas, with no within-area variation. Provisional because the publisher used mid-2024 adults. City of London is combined with Westminster; Isles of Scilly with Cornwall. National LSOA-weighted ties remain together; authority-weighted sensitivity is supplied. Source |
| Personal insolvency rate · authority contextFinancial context · candidate | provisionalbanded · 35,672 banded | 33,755 / 33,7550 unavailable | 1,917 / 1,9170 unavailable | 2025 events; mid-2024 adult denominatorDefinition & limitsPublished 2025 rate inherited from 316 lower-tier reporting areas, with no within-area variation. Provisional because the publisher used mid-2024 adults. City of London is combined with Westminster; Isles of Scilly with Cornwall. National LSOA-weighted ties remain together; authority-weighted sensitivity is supplied. Source |
| Road-weighted summer days >25°CWeather · supporting candidate | provisionalbanded · 35,365 banded | 33,505 / 33,755250 unavailable | 1,860 / 1,91757 unavailable | 1991–2020 climate normalDefinition & limitsObserved 1991–2020 mean annual days strictly >25°C, road-weighted using April 2026 mapped roads; ≥99% road coverage. This is not the planned ≥25°C threshold or annual post-pandemic heat. Public HadUK-Grid v1.1.0.0; geometry matched all 63,296 frozen frost-grid cells. Source |
English IMD and Welsh WIMD ranks are not pooled. Harmonised income and employment measures await comparable raw definitions. Overall IMD and living-environment scores are excluded from independent social evidence because they include road-collision information.
FROZEN BEFORE NEW OUTCOME MODELLING
Each LSOA has equal weight. Eligibility uses only source coverage and applicability. Identical values share a band, unavailable values stay missing, and regional views never rerank areas.
Original combined bands remain available if later modelling supports merging neighbouring categories.
Use 2022→2023 temporal testing and leave-one-region-out development tests. Both 2024 and 2025 were previously inspected and remain diagnostic; reserve a genuinely untouched complete future period for confirmation.
A fresh period must pass an outcome-access audit before independent confirmation. Insurer claims testing remains separate.
This is a retrospective registry: Census Day 2021, roads April 2026 and frost climatology 1991–2020. The 2025 air and insolvency sources were published in 2026; crime runs through August 2026 and OSM limits are from October 2026. These are retrospective context for earlier accident years. Connectivity has a Q4 2024 workbook reference, mixed source vintages and a 29 September 2025 publication date. These national bands were frozen on 12 October 2026. Publication dates differ from observation dates. These inputs cannot all be claimed available at a 2022 forecast origin.
OS roads include mapped private and restricted roads. Length shares and junction density are physical context, not motor-mile exposure. Sinuosity uses generalised geometry. Frost is a prior climate normal, not realised annual weather or measured carriageway ice.
Later collision models need matched all-motor miles and must assess whether features also influence exposure estimation. Location-of-collision features do not establish policyholder-residence risk or causal effects.
The protocol compares a baseline with continuous, smooth and categorical feature alternatives using the same observations and offsets. It records assessment metrics, geographical checks and proposed promotion gates.
EW-F6-V1 · FROZEN 13 OCTOBER 2026
Download the combined national lookup, source decisions and fixed boundaries. The compact reproduction kit rebuilds F6 from the pinned prior lookup and all new source aggregates; acquisition and spatial scripts document the deeper source reconstruction. It does not contain the large original geometry archives or restricted weather inputs.
E1–E3 23-candidate lookupOriginal 38-candidate lookupOriginal reproduction bundle
| Source | Observation period | Publication / edition | Retrieved |
|---|---|---|---|
| Census 2021 TS001 | 2021-03-21 | 2022-12-13 | 2026-10-10 |
| Census 2021 TS006 | 2021-03-21 | 2022-12-13 | 2026-10-10 |
| Census 2021 TS007A | 2021-03-21 | Not supplied; see archived metadata | 2026-10-12 |
| Census 2021 TS044 | 2021-03-21 | 2023-01-06 | 2026-10-10 |
| Census 2021 TS045 | 2021-03-21 | 2023-01-06 | 2026-10-10 |
| Census 2021 TS052 | 2021-03-21 | 2023-01-06 | 2026-10-12 |
| Census 2021 TS054 | 2021-03-21 | 2023-01-06 | 2026-10-12 |
| Census 2021 TS066 | 2021-03-21 | 2022-12-08 | 2026-10-12 |
| Census 2021 TS067 | 2021-03-21 | 2023-01-10 | 2026-10-12 |
| LSOA2021 to upper-tier authority 2023 | 2021 LSOA / 2023 UTLA | Not supplied; see archived metadata | 2026-10-10 |
| ONS region membership, geography-only extraction | LSOA2021 / UTLA2023 / English regions | Not supplied; see archived metadata | 2026-10-12 |
| Rural Urban Classification (2021) of LSOAs in EW | 2021 | Not supplied; see archived metadata | 2026-10-12 |
| Lower layer Super Output Areas (December 2021) EW Population Weighted Centroids | 2021 | Not supplied; see archived metadata | 2026-10-12 |
| ONS/Nomis Census 2021 TS058 | 2021-03-21 | 2022-12-08 | 2026-10-12 |
| ONS/Nomis Census 2021 TS061 | 2021-03-21 | 2022-12-08 | 2026-10-12 |
| DfT Transport connectivity metric 2025 | Q4 2024 reference; mixed source vintages | 2025-09-29 | 2026-10-12 |
| Met Office observed summer-days normal (>25°C) | 1991–2020 | 2022-03-15 | 2026-10-12 |
| Defra assessed annual ambient NO2 and PM2.5 | 2025 primary; 2022–24 separate | 2026-10-09 | 2026-10-12 |
| Police.uk frozen August 2026 street archive | September 2023–August 2026 | 2026-09-30 | 2026-10-12 |
| Geofabrik OSM England and Wales speed tags | 11 October 2026 | 2026-10-11 | 2026-10-12 |
| Insolvency Service individual insolvencies by location, England and Wales, 2015–2025 | 2025 primary; 2015–2025 revised history retained | 2026-03-27 | 2026-10-12 |
| OS Open Roads April 2026 | April 2026 | Exact source checksum retained | 2026-10-12 |
| ONS LSOA21 EW BFC V10 | LSOA2021 | Exact source checksum retained | 2026-10-12 |
| HadUK-Grid v1.1.0.0; Met Office Climate Data Portal 2 km product | 1991–2020 | Exact source checksum retained | 2026-10-12 |
OSM speed features: © OpenStreetMap contributors, Open Database Licence 1.0. Crime data: Police.uk, OGL v3.0. Air quality: Defra, OGL v3.0. Insolvency Service data: OGL v3.0. Contains ONS Census and geography data, DfT connectivity data, OS data © Crown copyright and database right 2026, and Met Office data under the Open Government Licence v3.0. Provenance and checksums are retained. Nomis bulk editions are explicit; no claim is made that they match the latest ONS API revision.