| 6904439 | T J Keeves & Sons | T J Keeves & Sons, Westgate Cottage, Banbury Road, Moreton Pinkney, Daventry, Northants, NN11 3SQ | NN11 | richardkeeves@hotmail.com | Richard Keeves | | — | |
| 6206564 | T A Hicks Electrical Ltd | Penlee Boathouse, 37 Porthcressa Road, St. Marys, Isles of Scilly, TR21 0JL, UK | TR21 0JL | hicks.electricalltd@gmail.com | Truan Hicks | | — | |
| 6026488 | Sycamore Farm (A1260) | Hazelwood Hill, Belper DE56 4AD, UK | DE56 4AD | nigelstraw@breladeestates.com | Mr Straw | | — | |
| 5752460 | Swansea University | Singleton Park Campus, Finance Department, Swansea SA2 8PP, UK | SA2 8PP | h.i.brice@swansea.ac.uk | Helen Brice | | — | |
| 5675652 | Swim Tek Pools | Oakleigh, Chapel Road, Roughton, Norwich, Norfolk, NR11 8QP, UK | NR11 8AF | — | Mr Howells | — | — | |
| 5487340 | SWS Wales Limited | Unit 4, Pant Dreiniog Industrial Estate, Carneddi, Bethesda, Bangor, Gwynedd, LL57 3LP, UK | LL57 3LP | sales@sitewater.co.uk | Ed Jones | | — | |
| 5426376 | Sze Leung | 7 Granary Halt, Rayne, Braintree, Essex, CM77 6AB, UK | CM77 6AB | kemeleung@gmail.com | Sze Leung | — | — | |
| 5407701 | SYH Designs | Ashington House, London Road, Ashington, Pulborough, West Sussex, RH20 3AT, UK | RH20 3AT | suharr@hotmail.com | Su Harr | — | — | |
| 5275983 | T G Morgan Electrical Ltd | Green Pastures, Medlam Lane, Carrington, Boston, Lincolnshire, PE22 7LU, UK | PE22 | morganelec@hotmail.co.uk | Emma Warren | — | — | |
| 5144539 | Syke House | Swillington Ln, Swillington, Leeds LS26 8BZ, UK | LS26 8BZ | — | Am Karvani | — | — | |
| 5087319 | T Glover Electrical | Rowenta, Stoke Road, Westbury-sub-Mendip, Wells BA5 1HD, UK | BA5 1HD | tom@tgloverelectrical.co.uk | Tom Glover | — | — | |
| 4991959 | Sylvester Engineering Ltd | Kingsmead, Marringdean Road, Billingshurst, West Sussex, RH14 9HE, UK | RH14 9HE | sales@sylvesterengineering.co.uk | Dave Sylvester | — | — | |
| 4817405 | T H Caley | Church Farm, Routh, Beverley, East Yorkshire, HU17 9SR, UK | HU17 9SR | georginastaal@yahoo.co.uk | TH Caley | — | — | |
| 4590833 | Sweeting Bros Ltd | Manor Farm, Cotness, Goole, East Yorkshire, DN14 7YE, UK | DN14 7YE | lens@sweetingbrosltd.co.uk | Leonard Sweeting | — | — | |
| 4237236 | T & K Electrical Limited | Unit 5 Chantry Park, Nuffield Industrial Estate, Poole, Dorset, BH17 0UJ, UK | BH17 0RR | joe@tandkelectricals.co.uk | Joe Tollerfield | | — | |
| 4160554 | Swinney Wood Log Cabins | Crich Ln, Belper DE56 2JG, UK | DE56 2JG | — | Paul Froggot | — | — | |
| 3680794 | Swift Environmental Services | 3 Westburn Fields, Lower Froyle, Alton GU34 4LF, UK | GU34 4LF | info@swiftenvironmentalservices.co.uk | Stuart Hedges | | — | |
| 3668312 | Swynford Cottage | Bedingfield, Eye IP23 7QE, UK | IP23 7QE | — | Douglas Nicholas | | — | |
| 3662809 | System Electrical (SW) Ltd | Tedburn St Mary, Exeter EX6 6EY, UK | EX6 6EY | systemelectrical@me.com | Richard Carpenter | | — | |
| 3492508 | T & B Containers (B1204) | Brenton Villa, Wrangle Bank, Boston, Wrangle, Boston PE22 9DL, UK | PE22 9DL | joe.lovelace@tbcontainers.com | Joe Lovelace | | — | |
| 3492507 | Sylvia House Association (D1113) | Briar Cottage, Witchampton, Wimbourne, Dorset, BH21 5AX | BH21 5AX | 99whiteg@gmail.com | Gary White | | — | |
| 9932612 | Swallows Nest | High Cross, Bleasby, Nottinghamshire, NG14 7FR | NG14 7FR | helen.gray127@googlemail.com | Helen Gray | | — | |
| 9083280 | Swallowholme Camping & Caravan Park | Station Rd, Bamford, Hope Valley S33 0BN, UK | S33 0BN | pamlocking@swallowholme.com | Pam Locking | | — | |
| 9063619 | Susie Hewitt | 20 Brown Lane, Barton, Nottingham NG11 0AD, UK | NG11 0AD | susiehewitt23@outlook.com | Susie Hewitt | | — | |
| 6924752 | SV London Construction Ltd | SV London Construction Limited, 387 Camden Road, London, Greate London, N7 0SH | N7 0SH | navin@svconstruct.co.uk | Navin Kerai | | — | |