| DEARDEN | — | — | — | Open → |
| DEBBIE ARNETT | — | — | — | Open → |
| Debbie Mercer | Leeds | — | — | Open → |
| Debbie Shepherd | Pocklington | — | — | Open → |
| DEBORAH JUDAH | — | — | — | Open → |
| Deborah Taylor | Selby | debz_777@hotmail.com | — | Open → |
| DEE ATKINSON & HARRISON | — | — | — | Open → |
| Dee Valley Water | Wrexham, Clwyd | — | 01978 846946 | Open → |
| DEIGHTON | — | — | — | Open → |
| Denbighshire County Council | Denbigh | building.control@denbighshire.gov.uk | 01824 706717 | Open → |
| DENMAN | — | — | — | Open → |
| DENNESS | — | — | — | Open → |
| DENTON | — | — | — | Open → |
| Derby City Council | Derby | — | 01332 293111 | Open → |
| Derbyshire Dales District Council | Derbyshire | — | 01629 580580 | Open → |
| Derbyshire Fire & Rescue Service | Ripley | — | — | Open → |
| Derek Carncross | — | — | — | Open → |
| Derek Lee | Leeds | — | — | Open → |
| Derian Beer | Doncaster | — | — | Open → |
| DERWENT VALE DEVELOPMENTS LTD | — | — | — | Open → |
| Derwentside District Council | Consett, County Durham | — | 01207 217281 | Open → |
| DesignR | Market Weighton | roydesignr1@btconnect.com | 01430 871111 | Open → |
| DEVENISH | — | — | — | Open → |
| Devon and Somerset Fire and Rescue Service | Taunton | — | 01823 365365 | Open → |
| Devon and Somerset Fire and Rescue Service | Yeovil | — | 01935 382000 | Open → |