| Rackemapp Ltd | Administrative & support | 2025 |
| Radio Rated Ltd | Information & communication | 2022 |
| Rainbow Executive Cars Limited | Transport & logistics | 2014 |
| Ralph Lewin Ltd | Professional & scientific | 2006 |
| Rambo Cars Ltd | Wholesale & retail | 2021 |
| Ramil KG Limited | Real estate | 2026 |
| Ramridge Solutions Ltd | Professional & scientific | 2025 |
| Random Hall Limited | Information & communication | 2007 |
| Ranson Houghton LLP | | 2012 |
| Rarity Giftware Ltd | Wholesale & retail | 2015 |
| Rawtalent Ltd. | Extraterritorial | 2021 |
| Rccg Petra House | Other services | 2023 |
| Rcdavis Services Ltd | Information & communication | 2018 |
| RDA Roofing and Guttering Ltd | Construction | 2024 |
| RDS Property Rentals Ltd | Real estate | 2023 |
| Re-Design UK Limited | Manufacturing | 2003 |
| Re:Public Space Ltd | Construction | 2025 |
| Reach Advisory Ltd | Professional & scientific | 2021 |
| Real Estate & Rural Limited | Real estate | 2017 |
| Reale Transport Ltd | Wholesale & retail | 2025 |
| Realhurry Limited | Construction | 1987 |
| Realise, Change, Achieve (RCA) Ltd | Professional & scientific | 2026 |
| Reanthai Massage and Spa Limited | Other services | 2020 |
| Reaper Baits Ltd | Manufacturing | 2025 |
| Reasons Fitness Limited | Arts & recreation | 2011 |
| Rebecca Speculo Kitchen Design Ltd | Professional & scientific | 2017 |
| Rebel Wine Ltd. | Wholesale & retail | 2016 |
| Reborn Leasing (UK) Ltd | Wholesale & retail | 2018 |
| Recovair Limited | Public administration | 1999 |
| Red Hot Gymnastics Ltd | Arts & recreation | 2025 |
| Red House Farm Equestrian Ltd | Agriculture & fishing | 2018 |
| Red Kite in Flight Ltd | Other services | 2022 |
| Red on Blue - Leadership in Action Ltd | Other services | 2018 |
| Red Post Services (Andover) Limited | Wholesale & retail | 2013 |
| Red Rosette Horsebox Hire Limited | Administrative & support | 2018 |
| Redcoat Security Ltd | Administrative & support | 2026 |
| Redenham Agriculture Limited | Wholesale & retail | 2017 |
| Redenham Solar Park Limited | Energy | 2015 |
| Redwood Global Holdings Limited | Manufacturing | 2012 |
| Redwood Global Limited | Manufacturing | 2014 |
| Rees Lightning Electrical Limited | Construction | 2025 |
| Reflection Window Tinting Service Ltd | Manufacturing | 2024 |
| Regal PVT Limited | Health & social care | 2023 |
| Regenthill Limited | Water & waste | 1999 |
| Regina & Victoria Properties Limited | Real estate | 2024 |
| Reid Wright & Holloway (Distillers) Limited | Manufacturing | 2021 |
| Reign Path Ltd | Wholesale & retail | 2023 |
| Reliance Consulting Limited | Other services | 2019 |
| Renshaw U.K. Limited | Real estate | 1935 |
| Rent Smart Management Ltd | Other services | 2025 |
| Renucon Limited | Professional & scientific | 2014 |
| RES Consortium Limited | Professional & scientific | 2003 |
| Reset Holistic Limited | Health & social care | 2025 |
| Rest&Roam Ltd | Real estate | 2024 |
| Restored Autos Limited | Wholesale & retail | 2025 |
| Resurgent Fitness Ltd | Health & social care | 2021 |
| RETROGRAPHICS20 Ltd | Wholesale & retail | 2023 |
| Reupholstery Limited | Extraterritorial | 1988 |
| Reviga Transport Ltd | Wholesale & retail | 2020 |
| Reyoudigital Ltd | Professional & scientific | 2025 |
| RFT Services Limited | Other services | 2025 |
| RGN Tinashe Ltd | Health & social care | 2025 |
| Rgtlocksmiths Ltd | Manufacturing | 2021 |
| RH Plant Machinery Limited | Agriculture & fishing | 2022 |
| RH Refurb Ltd | Construction | 2024 |
| Riae Investments Limited | Financial services | 2026 |
| Riae Media Ltd | Information & communication | 2019 |
| Riae Properties Ltd | Real estate | 2020 |
| Rice and Roll Andover Ltd | Hospitality | 2025 |
| Rich Andover Realty Limited | Other services | 2019 |
| Rich Products Limited | Manufacturing | 1984 |
| Richard Pearce Wealth Management Ltd | Financial services | 2022 |
| Ride With Mike Limited | Transport & logistics | 2024 |
| Ridgeway Electronics Manufacturing Limited | Professional & scientific | 2005 |
| Ridgeway Services Limited | Professional & scientific | 1989 |
| Rigbys Barbershop Ltd | Other services | 2025 |
| Rilai Financial Services Limited | Financial services | 2020 |
| Ringing World Limited(The) | Information & communication | 1983 |
| Rising Sun Autoparts Limited | Wholesale & retail | 2019 |
| Rita's African Caribbean Food Market Ltd | Wholesale & retail | 2020 |
| River View Tax & Accountancy Ltd | Professional & scientific | 2014 |
| Riverdale Homes Limited | Construction | 1998 |
| Rivington Estate Management Limited | Real estate | 1989 |
| RJ Archer Construction Ltd | Construction | 2023 |
| RJ Hair & Cosmetics Limited | Other services | 2026 |
| RJ Investment Properties Ltd | Real estate | 2021 |
| RJ Properties 1 Ltd | Real estate | 2026 |
| RJ Properties 2 Limited | Real estate | 2026 |
| RJ Properties 3 Ltd | Real estate | 2026 |
| RJB Consulting Solutions Ltd | Professional & scientific | 2024 |
| Rkmc Healthcare Services Limited | Health & social care | 2022 |
| Rljb Business Consulting Limited | Professional & scientific | 2017 |
| RM Enterprices Limited | Wholesale & retail | 2024 |
| RM Testing Consultants Limited | Information & communication | 2014 |
| RMG Home Improvements Limited | Construction | 2016 |
| RMT Training Solutions Limited | Education | 2018 |
| Roar Architects Limited | Construction | 2019 |
| Roar Assemble Limited | Construction | 2025 |
| Roar Interiors Limited | Other services | 2018 |
| Roar SOB Limited | Professional & scientific | 2015 |