Data Sources & Attribution
Every report shows, per layer, whether it was generated from live data or a sample. Sources used by CILCheck UK:
| Layer | Publisher | Licence |
|---|---|---|
| Postcode → charging authority | postcodes.io (ONS Postcode Directory) | OGL v3 / OS OpenData |
| Borough CIL charging schedules (rates, zones, dates) | Each council's adopted Charging Schedule and annual indexed-rate statement — URL and verification date shown per council | OGL v3 (council publications) |
| Mayoral CIL 2 (London) | Greater London Authority — MCIL2 Charging Schedule and annual rate summary | OGL v3 |
| Charging-schedule document index (councils not yet compiled) | planning.data.gov.uk — community-infrastructure-levy-schedule (MHCLG) | OGL v3 |
| Liability, surcharge & exemption rules | Community Infrastructure Levy Regulations 2010 (SI 2010/948) as amended, regs 40, 42, 42A–42B, 54A–54D, 67–70, 80–87 | Legislation (OGL / OPSI) |
Contains public sector information licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right; contains Royal Mail data © Royal Mail copyright and database right; contains National Statistics data © Crown copyright and database right (via postcodes.io / ONS Postcode Directory).