| Ruth Mundy Weddings Ltd | Arts & recreation | 2023 |
| Rutherford IDE Limited | Wholesale & retail | 2014 |
| Ruthlynchconsultancy and Supplying Limited | Professional & scientific | 2024 |
| Rutland Court Holdings Ltd | Households | 2023 |
| Rutland Way Management Company Limited | Households | 1998 |
| RVA Clean & Service Ltd | Administrative & support | 2021 |
| RVC E-Commerce Ltd | Wholesale & retail | 2023 |
| Rvjl Ltd | Financial services | 2019 |
| Rvoj Enterprise Ltd | Administrative & support | 2024 |
| RVW Invest LLP | | 2024 |
| RW & EM Holdings Limited | Financial services | 2024 |
| RW Automotive Ltd | Wholesale & retail | 2017 |
| RWC Build Better Ltd | Construction | 2019 |
| RWK Recruitment Limited | Administrative & support | 2015 |
| Rwnv Limited | Administrative & support | 2009 |
| RWP Automotive Technic Ltd | Wholesale & retail | 2018 |
| RX Lounge African Restaurant Ltd | Hospitality | 2019 |
| Rxpet Limited | Professional & scientific | 2015 |
| Rxproperties Limited | Real estate | 2017 |
| Ryan Contracting UK Limited | Construction | 2006 |
| Ryan Fencing Ltd | Administrative & support | 2014 |
| Ryan Lezar Plumbing & Heating Limited | Construction | 2022 |
| Ryan Stoker Limited | Arts & recreation | 2023 |
| Ryan's Window Cleaning Ltd | Administrative & support | 2017 |
| Rycon Southern Sealants Limited | Construction | 2003 |
| Ryde South Ltd | Transport & logistics | 2025 |
| Ryfa Construction Ltd | Other services | 2024 |
| Rykys Ltd | Real estate | 2024 |
| Ryleytino Limited | Health & social care | 2023 |
| Ryves Slinging Ltd | Construction | 2024 |
| Ryzenyt Ltd | Information & communication | 2024 |
| Ryzo Construction Ltd | Construction | 2022 |
| RZ Homes Limited | Real estate | 2018 |
| Rzsh Ltd | Information & communication | 2019 |
| S & C Properties South Ltd | Real estate | 2023 |
| S & J Building Services (UK) Limited | Construction | 2004 |
| S & K Lymington Limited | Extraterritorial | 2016 |
| S & K Shirley Limited | Health & social care | 2014 |
| S & L Asset Management Limited | Extraterritorial | 2013 |
| S & N Management Services Limited | Professional & scientific | 2016 |
| S & R Properties (Southampton) Ltd | Real estate | 2024 |
| S & S Consulting Services (UK) Limited | Administrative & support | 2011 |
| S & S Diesel Services Ltd | Wholesale & retail | 2007 |
| S & S Subs Limited | Hospitality | 2005 |
| S & T Hampshire Properties Limited | Real estate | 2017 |
| S & T Training Holding Company Limited | Professional & scientific | 2007 |
| S & T Training Limited | Administrative & support | 2002 |
| S &P Lettings South Ltd | Real estate | 2024 |
| S a Printing Group Limited | Financial services | 2013 |
| S a R Enterprise Limited | Financial services | 2007 |
| S Allen Electrical Ltd | Construction | 2018 |
| S and R Properties (Southern) Ltd | Real estate | 2025 |
| S B Energy UK Limited | Wholesale & retail | 2009 |
| S B Hurcombe Electrical Ltd | Construction | 2014 |
| S Braithwaite Limited | Construction | 2018 |
| S Brewer Building Ltd | Construction | 2022 |
| S C Aero Engineering Ltd | Wholesale & retail | 2025 |
| S C Phillips Limited | Financial services | 2025 |
| S Cheema Transport Ltd | Transport & logistics | 2025 |
| S Cobra K Ltd | Real estate | 2025 |
| S Construction Southern Limited | Construction | 2019 |
| S F Property Management Ltd | Real estate | 2019 |
| S G Flooring Ltd | Construction | 2024 |
| S G Services (Southampton) Limited | Wholesale & retail | 2013 |
| S H Chapel Limited | Real estate | 2025 |
| S H Flooring Limited | Construction | 2017 |
| S H Loftus Builders Limited | Administrative & support | 2020 |
| S H Loftus Properties Limited | Real estate | 2017 |
| S I Huxley Deliveries Ltd | Transport & logistics | 2014 |
| S J Carpentry & Joinery Services Limited | Construction | 2012 |
| S J Cole Group Limited | Financial services | 2026 |
| S J Developments (SW) Limited | Real estate | 2025 |
| S J Electrical (South) Limited | Construction | 2010 |
| S J Felton Consulting Limited | Administrative & support | 2012 |
| S J Hill Hygiene Therapy Ltd | Health & social care | 2022 |
| S LEE & Sons Limited | Wholesale & retail | 2008 |
| S M Facades Holdings Ltd | Financial services | 2019 |
| S M H Container Services Limited | Transport & logistics | 2012 |
| S Mazar Transport Ltd | Transport & logistics | 2024 |
| S Munro Consultancy Ltd | Professional & scientific | 2025 |
| S Myers Limited | Construction | 2019 |
| S N C Installations Limited | Construction | 1999 |
| S Osman & SON Limited | Administrative & support | 2013 |
| S Properties Limited | Real estate | 2002 |
| S R Hayer Services Limited | Transport & logistics | 2025 |
| S R South Property Ltd | Real estate | 2023 |
| S S Motors Limited | Wholesale & retail | 2003 |
| S T Securities Limited | Professional & scientific | 2018 |
| S V Gibson Consultants Limited | Professional & scientific | 2023 |
| S&B Reet Properties Limited | Real estate | 2025 |
| S&C Private Ltd | Real estate | 2025 |
| S&D Brickwork Ltd | Construction | 2022 |
| S&E Neter Limited | Construction | 2015 |
| S&J Leasing Ltd | Real estate | 2001 |
| S&J Pardesi Solicitors Ltd | Professional & scientific | 2021 |
| S&J Propco Ltd | Financial services | 2025 |
| S&L Dispatch Limited | Transport & logistics | 2017 |
| S&L Godwin Ltd | Hospitality | 2019 |
| S&L Living Ltd | Real estate | 2025 |
| S&M Concreting Ltd | Construction | 2019 |