| ST Andrews Park 3B (Uxbridge) Management Company Limited | Households | 2016 |
| ST Andrews View (Morley) Management Company Limited | Households | 2014 |
| ST Aubyn Park Management Company Limited | Households | 2013 |
| ST Clements Residents Company Limited | Households | 2013 |
| ST Clements Site Management Limited | Other services | 2015 |
| ST Denys Gate Management Company (Lisvane) Limited | Real estate | 2014 |
| ST George's Court (Weston-Super-Mare) Management Company Limited | Households | 2007 |
| ST George's Meadow Manco Limited | Households | 2015 |
| ST James Mews (Dudley) Management Company Limited | Households | 2013 |
| ST Johns Chelmsford Management Company Limited | Households | 2013 |
| ST Johns Mews (Brymbo) Limited | Households | 2018 |
| ST Johns Mews Freehold Limited | Households | 2015 |
| ST Jude's Meadow Management Company Limited | Households | 2019 |
| ST Loyes Court (Exeter) Limited | Households | 1974 |
| ST Mary's Gate (Bhdw) Management Limited | Households | 2015 |
| ST Mary's Park (Hartley Wintney) Management Company Limited | Households | 2010 |
| ST Michaels (Cheltenham) Management Company Limited | Administrative & support | 2005 |
| ST Neots (Site B1) Management Company Limited | Households | 2008 |
| ST Oswalds Manor Management Company Limited | Households | 2015 |
| ST Oswalds Park (Gloucester) Management Company Limited | Households | 2009 |
| ST Peter's Field (Bottisham) Management Company Limited | Households | 2010 |
| ST Peter's Walk (Wolverhampton) NO.3 Management Company Limited | Households | 2009 |
| ST Peters (Rugby) Management Company Limited | Households | 2007 |
| ST Peters Walk (Wolverhampton) Management Company Limited | Households | 2006 |
| ST Peters Walk (Wolverhampton) NO.2 Management Company Limited | Households | 2007 |
| ST Thomas Park at Ramsey Management Company Limited | Professional & scientific | 2018 |
| ST. Andrews Flats (Henley) Limited | Households | 1983 |
| ST. Andrews Place (Morley) Management Co. Limited | Households | 2018 |
| ST. John's Mews Management Limited | Households | 1984 |
| ST. John's Walk (Hoylandswaine) Management Company Limited | Real estate | 2016 |
| Stable END (Lambourn) Management Company Limited | Households | 2003 |
| Stafford Road (Caterham) Retirement Management Company Limited | Households | 2007 |
| Stagecoach Promotions Ltd | Administrative & support | 2008 |
| Stallard House Management Company Limited | Households | 2022 |
| Stanford Meadow (Faringdon) Residents Management Company Limited | Households | 2019 |
| Stanhope (Site 1) Management Company Limited | Real estate | 2011 |
| Stanhope (Site 5) Management Company Limited | Real estate | 2008 |
| Stanhope (Site 6) Management Company Limited | Real estate | 2010 |
| Stanhope (Site 7) Management Company Limited | Real estate | 2010 |
| Stanhope (Site 8) Management Company Limited | Real estate | 2007 |
| Stanstead Road (Caterham) Management Company Limited | Households | 2009 |
| Stary Eyed Ltd | Wholesale & retail | 2018 |
| Steamer Point (Friars Cliff) Management Company Limited | Households | 2025 |
| Steeds Farm (Fern Hill Gardens) Management Co Limited | Households | 2017 |
| Stem Lane Residents Company Limited | Households | 1980 |
| Stensons Quarter (Coalville) Management Company Limited | Households | 2016 |
| Stephen Grimwood Electrical Limited | Construction | 2012 |
| Stephen Harris GAS Plumbing & Heating Limited | Construction | 2012 |
| Stephen Philip Homes Ltd | Real estate | 2023 |
| Steve Randles Autosmart Ltd | Wholesale & retail | 2023 |
| Steve Tolley Fire Consultancy Limited | Professional & scientific | 2017 |
| Stockham Farm (Wantage) Management Company Limited | Households | 2014 |
| Stonebond Waterbeach (West Building) Residents Management Company Limited | Households | 2022 |
| Strawberry Fields at Great Yeldham Managing Company Limited | Professional & scientific | 2019 |
| Strollers Reach (Freehold) Limited | Households | 2018 |
| Stuart Court (Highcliffe) Limited | Households | 1995 |
| Studio One Nails and Beauty Limited | Other services | 2014 |
| Sturt Pond Close Management Company Ltd | Households | 2019 |
| Sulham View Residents Association Limited | Households | 1976 |
| Sullivan Lawford Ltd | Real estate | 2007 |
| Super Brothers Arms Ltd | Hospitality | 2023 |
| Supermusick Ltd | Information & communication | 2021 |
| Sussex Trail Events Limited | Arts & recreation | 2013 |
| Suthers Street Management Company Limited | Households | 2008 |
| Swans Rise (Dawlish) Management Company Limited | Households | 2012 |
| Swanvale (Falmouth) Amenity Areas Management Company Limited | Households | 2010 |
| Swanvale Apartments Management Company Limited | Households | 2016 |
| Swanvale Management Company (Falmouth) Limited | Households | 2011 |
| Swanwick Lane Management Company Limited | Households | 2011 |
| Swift UK Foods Limited | Hospitality | 2025 |
| Switch Lifts Ltd | Manufacturing | 2011 |
| SY Anna Charters LLP | | 2022 |
| Sylvan Meadows (Walberton) Management Company Limited | Households | 2024 |
| Symmetry Energy Springs Limited | Financial services | 2025 |
| Syrus Insight Limited | Professional & scientific | 2012 |
| T G Hyde Limited | Professional & scientific | 2012 |
| T J Elford Limited | Construction | 2012 |
| Tailored Environmental Solutions Limited | Professional & scientific | 2021 |
| Talbot View Management Limited | Households | 2007 |
| Talbot Way (Tilehurst) Management Company Limited | Real estate | 1983 |
| Tame View Management Company Limited | Households | 1998 |
| Tanfields (Reading) Limited | Real estate | 2003 |
| TANISHKAA11 Ltd | Wholesale & retail | 2019 |
| Tansel Seltan Ltd | Wholesale & retail | 2026 |
| TAO Y Ltd | Health & social care | 2024 |
| TAP Works at Wolverhampton Management Company Limited | Households | 2018 |
| Taplin Production Services Limited | Manufacturing | 2023 |
| Tara Fields (East Ayton) Management Company Limited | Households | 2018 |
| Tatarlar Ltd | Transport & logistics | 2020 |
| TAW Vale Quay Residents' Management Company Limited | Households | 2009 |
| Team B&A Scaffolding Limited | Construction | 2018 |
| Tech Smart Traders Ltd | Wholesale & retail | 2019 |
| Tech-Elec (Services) Ltd | Construction | 2014 |
| Techlam Ltd | Other services | 2022 |
| Technic Electric Limited | Other services | 1988 |
| Techshed Ltd | Construction | 2023 |
| Telecare Monitoring Limited | Extraterritorial | 2018 |
| Telehealth Limited | Other services | 2016 |
| Telepro Control Services Ltd | Information & communication | 2009 |
| Templar's Green Management Company Limited | Households | 2013 |