| DUNCKLEY | — | — | — | Open → |
| Dundee City Council | Dundee | — | 01382 434201 | Open → |
| DUNNICLIFFE | — | — | — | Open → |
| Dwr Cymru Welsh Water | Treharris, Mid Glamorgan | — | 0800 052 0130 | Open → |
| DYE | — | — | — | Open → |
| Dzign House Architecture Ltd | Leeds | sb@dzign.house | 0113 2400012 | Open → |
| E & D Coulson | Snaith | — | — | Open → |
| E BUILD | — | — | — | Open → |
| E LUDLOW | — | — | — | Open → |
| E RENDER | — | — | — | Open → |
| Easi Skies Ltd | Easingwold | — | — | Open → |
| Easington District Council | Peterlee, Co. Durham | — | 0191 527 0501 | Open → |
| East & South Cheshire | — | — | — | Open → |
| East Cambridgeshire District Council | Ely | — | 01353 616207 | Open → |
| East Devon District Council | Devon | — | 01395 517481 | Open → |
| East Dorset District Council | Dorset | — | 01202 886201 | Open → |
| East Hampshire District Council | Hampshire | building.control@easthants.gov.uk | 01730 234201 | Open → |
| East Hertfordshire District Council | Herts. | — | 01923 471555 | Open → |
| East Lindsey District Council | Louth, Lincolnshire | lbc@lincsbc.gov.uk | x | Open → |
| East Northamptonshire Council | Thrapston | building.control@east-northamptonshire.gov.uk | 01832 742000 | Open → |
| East Northamptonshire District Council | Northamptonshire | — | 01832 742122 | Open → |
| East Riding Council | Beverley | — | 01482 887700 | Open → |
| East Riding of Yorkshire Council | Beverley | building.control@eastriding.gov.uk | 01482 393939 | Open → |
| EAST RIDING SACKS LTD | — | — | — | Open → |
| East Riding Sacks Ltd | Full Sutton | — | — | Open → |