| Studland View RTM Company Limited | Households | 2014 |
| Studley Tower Limited | Households | 2014 |
| Study Abroad Intercambios Limited | Education | 2023 |
| Stuff and Nonsense Theatre Company Limited | Arts & recreation | 2013 |
| Stuffa Limited | Wholesale & retail | 2012 |
| Stump Grinding Specialist Ltd | Administrative & support | 2025 |
| Sturminster Hire Limited | Administrative & support | 2023 |
| Sturtons & Tappers Limited | Wholesale & retail | 1954 |
| Sturtons Group Limited | Wholesale & retail | 2010 |
| Stutek Ltd | Information & communication | 2019 |
| Style Sisters Limited | Other services | 2004 |
| Stylistix Hair & Beauty Limited | Other services | 2013 |
| SU FLY Designs Ltd | Professional & scientific | 2019 |
| Subs Agency Ltd | Manufacturing | 2025 |
| Subs Site Ltd | Manufacturing | 2025 |
| Subway South (Bournemouth) Holdings Limited | Financial services | 2012 |
| Subway South (Bournemouth) Limited | Hospitality | 2003 |
| Succeed in Dating Ltd | Education | 2022 |
| Suckers Run Ltd | Manufacturing | 2026 |
| Suddenly Funk Ltd | Hospitality | 2019 |
| Sudharron Ltd | Wholesale & retail | 2026 |
| Sudokucon Manchester 2026 Limited | Administrative & support | 2025 |
| Sufdzy Enterprise Ltd | Wholesale & retail | 2025 |
| Suffolk House (Bournemouth) Management Company Limited | Households | 2001 |
| Suffolk Management Limited | Households | 2003 |
| Sugar & Steam Ltd | Hospitality | 2025 |
| Sugarmango Limited | Wholesale & retail | 2008 |
| Suisca Investments Limited | Real estate | 2015 |
| Sukh-Noor Ltd | Wholesale & retail | 2025 |
| Sukha ET AL Limited | Other services | 2016 |
| Sukhothai Chiropractic Limited | Health & social care | 2021 |
| Sulla Marine Services Limited | Wholesale & retail | 2026 |
| Sullivan & Sullivan Limited | Wholesale & retail | 2010 |
| Sumar Investments Ltd | Construction | 2017 |
| Summers Construction Limited | Construction | 2019 |
| Summit Crew Ltd | Arts & recreation | 2026 |
| Summit Land and Development Ltd | Construction | 2019 |
| Sumo Building & Maintenance Limited | Extraterritorial | 2012 |
| Sumo Glazing Limited | Construction | 1995 |
| Sun 2 Power Limited | Construction | 2022 |
| Sun Sport Energy Ltd | Professional & scientific | 2024 |
| Sunbeam Media Ltd | Administrative & support | 2018 |
| Sunbelt Limited | Professional & scientific | 2022 |
| Sunbury Court Freehold Ltd | Households | 2007 |
| Sunbury Court Residents Limited | Administrative & support | 2002 |
| Sunda's Edge Ltd | Administrative & support | 2026 |
| Sunday Shoes Ltd | Wholesale & retail | 2015 |
| Sunlite Cleaning Services Ltd | Administrative & support | 2013 |
| Sunlution Power Ltd | Construction | 2024 |
| Sunningdale (Bournemouth) Management Company Limited | Households | 1989 |
| Sunningdale (Poole) Residents Association Limited | Administrative & support | 1969 |
| Sunningdale Freehold Limited | Households | 2005 |
| Sunny Muneeta Ltd. | Health & social care | 2003 |
| Sunrise Management Company (Bournemouth) Limited | Real estate | 1988 |
| Sunseekers Limited | Extraterritorial | 2006 |
| Sunset Homes Ltd | Real estate | 2020 |
| Sunset Property Investments Ltd | Real estate | 2024 |
| Sunshine BH Cleaning Ltd | Administrative & support | 2025 |
| Sunshine Care 24/7 Ltd | Administrative & support | 2016 |
| Sunshine Care Gambia Ltd | Health & social care | 2022 |
| Sunshine Leisure Ltd | Construction | 2026 |
| Sunshine Properties Group Ltd | Real estate | 2023 |
| Sunshinepath Ltd | Wholesale & retail | 2020 |
| Suntecservices Limited | Construction | 2024 |
| Sunway Freehold Limited | Financial services | 2022 |
| SUP Dawg Ltd | Administrative & support | 2021 |
| Super Seller Ltd | Wholesale & retail | 2018 |
| Superclean Commercial Ltd | Administrative & support | 2003 |
| Superiorgoodsuk Ltd | Other services | 2024 |
| Superlative & Countrywide Ltd | Construction | 2025 |
| Supermarket Romania Ltd. | Wholesale & retail | 2016 |
| Superstar Construct Limited | Construction | 2025 |
| Superwed Cars Limited | Other services | 2000 |
| Suppart Grace Michalska Ltd | Wholesale & retail | 2019 |
| Supplement Brothers Ltd | Wholesale & retail | 2023 |
| Supply-Nest.Com Ltd | Wholesale & retail | 2024 |
| Support Expert Training Ltd | Wholesale & retail | 2026 |
| Supra Supplements Ltd | Wholesale & retail | 2025 |
| Supreme Boiler Care Ltd | Construction | 2023 |
| Supreme Fitness Centre Ltd | Arts & recreation | 2020 |
| Surahh Limited | Hospitality | 2018 |
| Sure Deck Limited | Construction | 2022 |
| Sure Flame Plumbing Heating & GAS Services Limited | Extraterritorial | 2013 |
| Sure WIN Limited | Hospitality | 2023 |
| Surespire Ltd | Professional & scientific | 2025 |
| Sureweld Fabrications (Bournemouth) Limited | Manufacturing | 1997 |
| Sureworks Ltd | Other services | 2015 |
| Surrey 26 (Freehold) Management Ltd | Real estate | 2013 |
| Surrey Bells RTM Company Ltd | Households | 2009 |
| Surrey Court Freehold Limited | Real estate | 2010 |
| Surrey Court Management (NO.2) Limited | Households | 1987 |
| Surrey Court Management Limited | Households | 1987 |
| Surrey Glade Management Co Limited | Households | 2013 |
| Surrey Lodge Residents Association Limited | Households | 1989 |
| Surrey Towers Management Company Limited | Households | 1986 |
| Sursum Financial Services Limited | Financial services | 2011 |
| Surveyhq Ltd | Professional & scientific | 2026 |
| Susan 518 Limited | Hospitality | 2023 |
| Sussex Inns Limited | Hospitality | 2011 |
| Suzanne Press & Associates Ltd | Other services | 2015 |