| Staplehurst Garage Limited | Extraterritorial | 2014 |
| Staplehurst Takeaway Ltd | Hospitality | 2022 |
| Staplehurst Transits Limited | Transport & logistics | 1996 |
| Star Accounts & Admin Limited | Professional & scientific | 2002 |
| Star Healthcare Services Ltd | Health & social care | 2019 |
| Star IT Systems Ltd | Information & communication | 2017 |
| Star Organisational Consulting Ltd | Professional & scientific | 2017 |
| Star Tail Lifts Limited | Wholesale & retail | 2003 |
| Star Wear Uniforms Ltd | Wholesale & retail | 2024 |
| Starfish Properties (Brighton) Limited | Real estate | 2017 |
| Starlite Services Limited | Health & social care | 2018 |
| Starrgu Ltd | Information & communication | 2026 |
| Starsky Creative Ltd | Information & communication | 2017 |
| Start Engineering (Southern) Ltd | Administrative & support | 2003 |
| Start Engineering Limited | Extraterritorial | 2023 |
| Starton Consultancy Ltd | Construction | 2020 |
| Startup Painters and Decorators Ltd | Construction | 2006 |
| Starzz Limited | Information & communication | 2014 |
| Stash Creative Limited | Information & communication | 2023 |
| Station Food & Wine Limited | Wholesale & retail | 2013 |
| Statyba Limited | Construction | 2014 |
| Staw Global Ltd | Wholesale & retail | 2020 |
| Steadfast Holdings (Maidstone) Limited | Other services | 2019 |
| Steadfast Roofing & Building Ltd | Construction | 2025 |
| Steadline Limited | Construction | 1984 |
| Stealth Interior Solutions Ltd | Construction | 2016 |
| Stealth Managed Enterprise Limited | Real estate | 2007 |
| Steed Developments Ltd | Construction | 2019 |
| Steel Euro Services Limited | Wholesale & retail | 1991 |
| Steel Solutions Engineering Limited | Manufacturing | 2024 |
| Steel Stair Inspector Limited | Professional & scientific | 2017 |
| Steel Vantage Ltd | Construction | 2025 |
| Steele Andrews Estates Ltd | Real estate | 2020 |
| Steele Andrews Ltd | Professional & scientific | 2014 |
| Steele Group Holdings Ltd | Construction | 2026 |
| Steelo Installs Ltd | Construction | 2019 |
| Steelsources Ltd | Wholesale & retail | 2005 |
| Steely Good Food Company Ltd | Hospitality | 2018 |
| Stefan Trans - Logistics Ltd | Transport & logistics | 2018 |
| Stefani 1109 Ltd | Transport & logistics | 2025 |
| Stellar Pubs Limited | Hospitality | 2023 |
| Stemar Transport Ltd | Transport & logistics | 2022 |
| Stemay Limited | Administrative & support | 2021 |
| Step Distribution Ltd | Transport & logistics | 2019 |
| Step Studio Associates Ltd | Administrative & support | 2008 |
| Stephen G Anderson Limited | Information & communication | 1999 |
| Stephen Mcglennan Associates Limited | Administrative & support | 2020 |
| Steptoe&Co Limited | Wholesale & retail | 2024 |
| Stereo Images Ltd | Information & communication | 2002 |
| Sterling Capital Finance (South East) Limited | Financial services | 1998 |
| Sterling Construction & Projects Ltd | Construction | 2026 |
| Sterling Integrated Systems Limited | Administrative & support | 2009 |
| Sterling Sports & Prestige Ltd | Wholesale & retail | 2023 |
| Sterling Tech Solutions Ltd | Information & communication | 2023 |
| Sterling Thorn Holdings Limited | Real estate | 2023 |
| Sterling Yacht Management Ltd | Professional & scientific | 2015 |
| Steve Clout Estate Management Services Limited | Real estate | 2024 |
| Steve Higgs Books Limited | Information & communication | 2021 |
| Steve Kirchell Coaching Ltd | Other services | 2025 |
| Steve Rose Electrical Limited | Energy | 2009 |
| Stevens Construction Limited | Construction | 1992 |
| Stevens Global Trading Ltd | Wholesale & retail | 2025 |
| Stevenson Seacombe Partnership Ltd | Financial services | 2020 |
| Stewtopia Ltd | Hospitality | 2023 |
| Sticksgolf Ltd | Wholesale & retail | 2024 |
| Stiddard (UK) Limited | Professional & scientific | 2008 |
| Stillbright Cleaning Services Limited | Administrative & support | 2004 |
| Stilltho Accountants Limited | Professional & scientific | 2020 |
| Stilltho Limited | Professional & scientific | 2019 |
| Stitchshare Ltd | Wholesale & retail | 2025 |
| STK Auto Centre Ltd | Wholesale & retail | 2024 |
| STL International Limited | Manufacturing | 2002 |
| STL Lighting Limited | Administrative & support | 2006 |
| STN Decorators Ltd | Construction | 2018 |
| Stockton Associates Limited | Professional & scientific | 2010 |
| Stockton Court Farms Limited | Agriculture & fishing | 1994 |
| Stokes and Tilman Limited | Professional & scientific | 2022 |
| Stokes K9 Training Limited | Other services | 2024 |
| Stone Construction & Property Limited | Construction | 2025 |
| Stone Cottage Garden Care Ltd | Administrative & support | 2023 |
| Stone Court House Productions Limited | Arts & recreation | 2026 |
| Stone Digital Media Ltd | Wholesale & retail | 2021 |
| Stone Service Mirek Limited | Manufacturing | 2012 |
| Stone Village Properties Ltd | Real estate | 2024 |
| Stonelake Investments Limited | Financial services | 2012 |
| Stonely Training & Consultancy Limited | Professional & scientific | 2012 |
| Stonewall Estates Limited | Administrative & support | 2014 |
| Stonewood Build Group Ltd | Construction | 2026 |
| Storehouse Fine Arts Ltd | Transport & logistics | 2025 |
| Storey Flooring Ltd | Wholesale & retail | 2007 |
| Storigo Ltd | Wholesale & retail | 2025 |
| Storm Bookkeeping Ltd | Professional & scientific | 2023 |
| Storm Proof Roofing & Maintenance Limited | Construction | 2019 |
| Stormont Engineering Co.(Sevenoaks)Limited | Transport & logistics | 1937 |
| Stormont Engineering Company Limited | Transport & logistics | 1929 |
| Stormship Ventures Ltd | Information & communication | 2016 |
| Stott Solutions Ltd | Information & communication | 2026 |
| Stph Consultants Limited | Health & social care | 2017 |
| STR Metering Ltd | Construction | 2016 |
| Straight Forward Music Limited | Administrative & support | 2013 |