Legal Hub & Data Provenance

1. Data Provenance & Statutory Attribution Register (19 Datasets)

Underlying statistical, geospatial, housing, and infrastructure inputs synthesised by this API are sourced from 19 official UK public sector and postal registers under the Open Government Licence v3.0 (OGL v3.0), OS OpenData, Registers of Scotland Open Data, and Royal Mail PAF/Gridlink sublicence terms. Downstream developers and enterprise consumers re-using outputs from Postcode Context must satisfy the statutory attribution requirements below:

Combined Attribution Notice: If space is constrained, you may use our standard composite statement returned in all API responses (_attribution):

Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Contains HM Land Registry data © Crown copyright 2026. Contains Registers of Scotland data © Crown copyright and database right 2026. Contains public sector information licensed under the Open Government Licence v3.0 (MHCLG Open EPC, Scottish Government Domestic EPC, English/Welsh/Scottish Indices of Deprivation, Ofcom Connected Nations, DfE GIAS, CQC, Scottish Government, Welsh Government, Public Health Scotland, Healthcare Inspectorate Wales).

2. Territorial Scope & Geographic Boundaries

Great Britain Coverage: Postcode Context covers all 1,760,216 active postcodes and 51,101 LSOAs/Data Zones across Great Britain (England, Scotland, and Wales).

Northern Ireland Exclusion Rule: Postcodes originating in Northern Ireland (outward code prefix BT) are strictly excluded from our database. Land & Property Services Northern Ireland (LPS NI) maintains separate commercial licensing restrictions and royalty requirements on Pointer address data that are incompatible with our Great Britain baseline pipeline. Omitting BT postcodes keeps our database scoped cleanly to the 19 official GB public sector and Gridlink sources listed above.

Crown Dependencies: The Crown Dependencies (Jersey JE, Guernsey GY, Isle of Man IM) are self-governing jurisdictions and not part of Great Britain. They are excluded from ONS Census 2021 demographics, HM Land Registry records, and this service.

2.1 Geographic Granularity & Statistical Methodology Disclosures

To ensure rigorous data governance and scientific transparency, callers should note the two distinct geographic levels of measurement provided in API responses:

• Unit Postcode Resolution (~15–20 households): Geographic coordinates (latitude/longitude), outward/inward codes, HM Land Registry 3-year rolling residential sales deeds (2024–2026 for England & Wales) and Registers of Scotland (2023–2025 for Scotland), sales volume, and domestic Open EPC ratings and floor areas are evaluated directly at postcode granularity.
• Neighbourhood / LSOA Resolution (~650 households): ONS Census 2021 (England & Wales) and NRS Scotland Census 2022 demographics, housing tenure, higher education qualifications, NS-SeC managerial occupation shares, national Indices of Deprivation (IMD), and modelled household income are measured at Lower Layer Super Output Area (LSOA) level in England and Wales, and Data Zone level in Scotland. Unit postcodes map to their parent neighbourhood zone.
• Modelled Household Income Disclosure: The ONS Census 2021 did not ask an income question. The est_median_household_income_gbp metric is an econometric small-area heuristic estimate derived at LSOA / Data Zone neighbourhood level by evaluating statutory income deprivation data against Census occupational and qualification distributions, bounded between £21,000 and £95,000. It is a neighbourhood statistical baseline, not an observed individual household return.
• Statutory Crime Deprivation Deciles: The crime_safety_decile is drawn from the statutory Indices of Multiple Deprivation (MHCLG IoD 2025 for England, Welsh Government WIMD 2025, and Scottish Government SIMD 2020 Crime Domains). It measures population-weighted recorded crime rates per capita across violence, burglary, theft, and criminal damage. It reflects historical neighbourhood baseline deprivation, not an individual person's real-time victimisation risk.
• Open Government Licence & Underlying Source Disclaimer: In accordance with Clauses 5 and 6 of the Open Government Licence v3.0 and applicable Gridlink terms, all underlying public sector information is provided "as is" and the Crown, Royal Mail, and information providers exclude all representations, warranties, obligations and liabilities in relation to the Information to the maximum extent permitted by law. Access to the Postcode Context service is provided exclusively under our Terms of Service without warranties or downstream legal indemnification.

3. Business Information & Operator Disclosures

Pursuant to the Electronic Commerce (EC Directive) Regulations 2002:

• Service Operator: Postcode Context
• Jurisdiction: United Kingdom (England and Wales)
• Technical & Billing Support: support@postcodecontext.uk
• Legal & Compliance Notices: support@postcodecontext.uk

4. Quick Links & Machine-Readable Provenance

• Machine-Readable Attribution Registry (JSON) →
• Terms of Service & Disclaimers →
• Privacy Policy & Zero-IP-Storage Notice →
• Accessibility Statement (WCAG 2.2 AA) →
• OpenAPI 3.1.0 Machine-Readable Spec →