| UNDERWOOD | — | — | — | Open → |
| UNDERWOOD | — | — | — | Open → |
| United Utilities | Warrington | wastewaterdeveloperservices@uuplc.co.uk | 01925 237000 | Open → |
| Unknown | — | — | — | Open → |
| Unknown | — | — | — | Open → |
| Upkar Bahia | Leeds | — | 0711496490 | Open → |
| Upkar Bahia | Leeds | — | — | Open → |
| Upton Property Enterprises Ltd Upton Property Enterprises Ltd | Retford | — | — | Open → |
| URBAN CONSTRUCTION INTERIORS LTD | — | — | — | Open → |
| URRA ESTATE | — | — | — | Open → |
| Urra Estate | Chop Gate | — | — | Open → |
| V AUCKLAND | — | — | — | Open → |
| V LENDZIONWSKI | — | — | — | Open → |
| V PATEL &K SHARMA - PATEL | — | — | — | Open → |
| V TEASDALE | — | — | — | Open → |
| VAGG | — | — | — | Open → |
| Val Roddis | York | — | — | Open → |
| Val Roddis | York | — | — | Open → |
| VAL YEUNG & JULES BILTON | — | — | — | Open → |
| Valarie Roddis | York | — | — | Open → |
| Vale of Glamorgan Council | South Wales | — | 01446 704666 | Open → |
| Vale of White Horse District Council | Milton | building.control@southandvale.gov.uk | 01235 540357 | Open → |
| Vale Royal Borough Council | Winsford, Cheshire | — | 01606 862862 | Open → |
| Valerie Evans | Leeds | — | — | Open → |
| Vanessa Connolly | York | Vanessa.render@gmail.com | — | Open → |