| Squarecut Solutions 58 a Ltd | Real estate | 2025 |
| SR Care Service Management Ltd | Health & social care | 2023 |
| SR Robinsonsss Limited | Information & communication | 2026 |
| Sr&C (London) Ltd | Transport & logistics | 2023 |
| SRA Window Film Ltd | Professional & scientific | 2025 |
| Srabani UK Ltd | Administrative & support | 2017 |
| SRB Property Developments Ltd | Real estate | 2025 |
| SRB Systems Ltd | Construction | 2014 |
| Srimarks Ltd | Professional & scientific | 2013 |
| Srivir Tech Limited | Information & communication | 2023 |
| SRK Consultancy Services Limited | Information & communication | 2009 |
| SRK Homes Limited | Real estate | 2017 |
| SRK Mortgage Solutions Limited | Financial services | 2014 |
| SRS Fitness & Aesthetics Ltd | Administrative & support | 2026 |
| SS Edge Ltd | Administrative & support | 2022 |
| SS Moments Ltd | Hospitality | 2026 |
| SS Parc Ltd | Health & social care | 2023 |
| Ssaz IT Consulting Limited | Information & communication | 2026 |
| SSBUILD247 Ltd | Construction | 2026 |
| SSC Creative Ltd | Arts & recreation | 2015 |
| SSC Food Services Ltd | Hospitality | 2026 |
| SSC Property Services South Ltd | Real estate | 2026 |
| SSD Traders Ltd | Hospitality | 2023 |
| Ssjk Holdings Limited | Financial services | 2022 |
| SSK (SE) Limited | Real estate | 2024 |
| SST Taxi Ltd | Wholesale & retail | 2025 |
| ST Alfrege Abaami | Other services | 2022 |
| ST Georges Road(Bickley) Management Company Limited | Real estate | 2004 |
| ST James Promenade Ltd | Households | 2023 |
| ST Margarets Residents Limited | Households | 1995 |
| ST Michael's Court Freehold Limited | Administrative & support | 2012 |
| ST Michaels Court RTM Company Limited | Households | 2007 |
| ST Pauls Cray Rugby Club Ltd | Arts & recreation | 2016 |
| ST Pauls Square (Bromley) RTM Company Limited | Households | 2007 |
| ST Peters Heights (Bromley) RTM Company Limited | Real estate | 2026 |
| ST. Andrews Court (Bromley) Management Limited | Households | 1987 |
| ST. Annes Mount (2) Management Company Limited | Households | 1994 |
| ST. Annes Mount (Residents Association) Limited | Households | 1996 |
| ST. Louis Close Management Company Limited | Households | 2006 |
| ST. Luke's Square RTM Company Limited | Households | 2016 |
| ST. Netty's Property Ltd | Construction | 2022 |
| Stable Heating Services Limited | Construction | 2012 |
| Stables on Site Limited | Extraterritorial | 2013 |
| Staffer DEV Ltd | Information & communication | 2026 |
| Stag and Clover Limited | Hospitality | 2022 |
| Stage Door Sidcup Ltd | Wholesale & retail | 2025 |
| Stage Protection Services Ltd | Administrative & support | 2026 |
| Stage Strong Ltd | Other services | 2025 |
| Stagebox UK Limited | Administrative & support | 2015 |
| Stallions Services Ltd | Administrative & support | 2025 |
| Stamford Star Limited | Construction | 2024 |
| Stanborough Consulting Ltd | Extraterritorial | 2024 |
| Stand Your Ground Ltd | Other services | 2017 |
| Standard Wall Limited | Extraterritorial | 2011 |
| Standforth Limited | Manufacturing | 2025 |
| Stanley Apartments (Bromley) Management Limited | Real estate | 2003 |
| Stanley Court (Chalfont Road) RTM Company Limited | Real estate | 2021 |
| Star Core Tennis Ltd | Arts & recreation | 2025 |
| Star Electrics (Bromley) Ltd | Construction | 2020 |
| Star Occasions Events Ltd | Hospitality | 2020 |
| Starch Living Limited | Manufacturing | 2025 |
| Stardown Limited | Real estate | 1979 |
| Stardust Bars Ltd | Hospitality | 2025 |
| Stark Mechanical Solutions Ltd | Professional & scientific | 2013 |
| Starkle Ways Limited | Wholesale & retail | 2024 |
| Starline Legal Services Limited | Professional & scientific | 2018 |
| Stars Electrical Services Ltd | Construction | 2023 |
| Starsesh Ltd | Information & communication | 2024 |
| Start Lease Extensions Limited | Other services | 2017 |
| Station Approach (West Byfleet) Management Limited | Households | 2021 |
| Station Court Chambers Limited | Professional & scientific | 2025 |
| Station Kebabs Sevenoaks Limited | Hospitality | 2024 |
| Statzo Ltd | Information & communication | 2024 |
| Stavre Construction Ltd | Construction | 2023 |
| Steel Mill (Marion Distribution) Limited | Information & communication | 2011 |
| Stellar Property Management Limited | Real estate | 2022 |
| Stellarella Ltd | Arts & recreation | 2020 |
| Stem Professor Limited | Health & social care | 2024 |
| Stem-London Limited | Hospitality | 2002 |
| Stephen Court Management (Shortlands) Limited | Households | 1976 |
| Stephen Penney Ltd | Information & communication | 2025 |
| Stephenson Investments Limited | Real estate | 2021 |
| Stephenson Management Services Limited | Real estate | 2022 |
| Sterling Bullion Partners Ltd | Wholesale & retail | 2026 |
| Sterling Developments (Property) Limited | Real estate | 2021 |
| Sterling Developments (UK) Limited | Construction | 1999 |
| Steve Garrod Training Ltd | Education | 2013 |
| Stevens Wilson Limited | Real estate | 2020 |
| Stevensmarkets Ltd | Administrative & support | 2025 |
| Stewart House (London) RTM Company Limited | Real estate | 2022 |
| Stewart Management Company Limited | Households | 1984 |
| STG 1 Group Limited | Construction | 2017 |
| STG Global Limited | Wholesale & retail | 2017 |
| Stick IT on Your Wall Limited | Wholesale & retail | 2012 |
| Stickman Catering Limited | Hospitality | 2017 |
| Stiffy BAG Limited | Administrative & support | 2004 |
| Stigmasound Limited | Households | 1982 |
| Still Water Spa Ltd | Health & social care | 2023 |
| Stillsmokin Ltd | Administrative & support | 2015 |
| Stilltrimming Ltd | Other services | 2025 |