| Cheltenham Borough Council | Cheltenham | BuildingControl@cheltenham.gov.uk | — | Open → |
| Cherry Tree Developments | York | — | — | Open → |
| Cherwell District Council | Banbury | building.control@cherwellandsouthnorthants.gov.uk | 0300 003 0200 | Open → |
| Cheshire East Council | Crewe | buildingcontrol@cheshireeast.gov.uk | x | Open → |
| Cheshire Fire & Rescue Service | Winsford | — | 01606 868700 | Open → |
| Cheshire West & Chester Council | Winsford | building.control@cheshirewestandchester.gov.uk | — | Open → |
| Chester Blair Home Ltd | Selby | Andy.Nicholson@chesterblair.co.uk | — | Open → |
| Chester City Council | Chester | — | 01244 324324 | Open → |
| Chester Fire Safety Department | Chester | — | 01244 322222 | Open → |
| Chester Le Street District Council | Chester Le Street, County Durham | — | 0191 387 2170 | Open → |
| Chesterfield Borough Council | Millennium Way, Dunston Road | info@bcnconsultancy.co.uk | — | Open → |
| Chichester District Council | Chichester | buildingcontrol@chichester.gov.uk | 01243 534561 | Open → |
| chicken city not securi care | — | — | — | Open → |
| Chiltern District Council | Denham | buildingcontrol@southbucks.gov.uk | 01895 837296 | Open → |
| CHIS HOUSMAN | — | — | — | Open → |
| Chloe Smith | Leeds | — | — | Open → |
| Chorley Borough Council | Chorley, Lancashire | — | 01257 515240 | Open → |
| Chris & Julie Reid | Leeds | — | — | Open → |
| CHRIS BAXTER | — | — | — | Open → |
| Chris Bennett | Leeds | — | — | Open → |
| CHRIS BOX | — | — | — | Open → |
| Chris Carr Building & Joinery Services | Castleford | ccjoinery1996@icloud.com | — | Open → |
| Chris Chaplin | — | — | — | Open → |
| Chris Clint Building Contractor | York | chrisclintbuilding@yahoo.co.uk | — | Open → |
| Chris Clint Building Contractor | York | — | — | Open → |