| STG Building Control Partnership | Chatham | — | — | Open → |
| STOCKBRIDGE TECHNOLOGY CENTRE | — | — | — | Open → |
| Stockport Metropolitan Borough Council | Stockport | Initial.Notices@Stockport.gov.uk | x | Open → |
| Stockton on Tees Borough Council | Stockton on Tees | building.control@stockton.gov.uk | 01642 526040 | Open → |
| Stoke on Trent City Council | Stoke on Trent, Staffs. | bas@stoke.gov.uk | 01782 234567 | Open → |
| STONECASTLE HOMES | — | — | — | Open → |
| Stonehouse Construction | Barlby | neilstonehouse230@btinternet.com | — | Open → |
| STOREY | — | — | — | Open → |
| STORTON | — | — | — | Open → |
| STOTHARD | — | — | — | Open → |
| STOUT | — | — | — | Open → |
| Stowmarket | — | — | — | Open → |
| STRASZEWSKYI | — | — | — | Open → |
| Stratford upon Avon District Council | Stratford upon Avon | buildingcontrol@stratford-dc.gov.uk | 01789 260620 | Open → |
| Strathclyde Fire Brigade | Glasgow | — | 0141 332 5235 | Open → |
| Strathclyde Fire Brigade | Ardrossan | — | 01294 607000 | Open → |
| STREET SCAPE PRODUCTS LTD | — | — | — | Open → |
| STRINGER | — | — | — | Open → |
| Stroud District Council | Stroud | building.control@stroud.gov.uk | 01453 754510 | Open → |
| Stuart Shepherd | Leeds | — | — | Open → |
| Stuart & Nicola Keith | York | — | — | Open → |
| Stuart & Sarah Swinden | Wakefield | stu_swinden@hotmail.com | — | Open → |
| Stuart Shepherd | Leeds | — | — | Open → |
| STUART TURTON | — | — | — | Open → |
| STUART TURTON | — | — | — | Open → |