| Rogeka & Courtney Real Estate Group Ltd | Real estate | 2024 |
| Roger Black Fitness Ltd | Arts & recreation | 2020 |
| Rohat Barber Ltd | Other services | 2024 |
| Roisinmolly Limited | Arts & recreation | 2025 |
| Roker Management Limited | Professional & scientific | 2024 |
| Rokit Construction Limited | Construction | 2016 |
| Roll With IT Sandwich Bar Ltd | Hospitality | 2018 |
| Roller & Wrench Ltd | Construction | 2025 |
| Rolling With Life Clothing Ltd | Wholesale & retail | 2025 |
| Rolodex Insight Group Limited | Other services | 2024 |
| Romatt Ltd | Health & social care | 2014 |
| RON King RSS Limited | Administrative & support | 2002 |
| RON Reeve Limited | Wholesale & retail | 2010 |
| Ronald LEE Limited | Extraterritorial | 2016 |
| Rondor Court Freehold Ltd | Real estate | 2019 |
| Roof Direct Limited | Construction | 2017 |
| Roof Masters Roofing Solutions Ltd | Construction | 2025 |
| Roof-Bond Systems Limited | Construction | 1993 |
| Roofcover Limited | Wholesale & retail | 2010 |
| Roofgreen UK Limited | Construction | 2009 |
| Roofline (London and Home Counties) Ltd | Construction | 1999 |
| Roofline Southern Limited | Construction | 2005 |
| Roofwise Home Solutions Ltd | Construction | 2026 |
| Roomstation Limited | Real estate | 2021 |
| Rope Systems Limited | Education | 2015 |
| Rose Care Agency Limited | Administrative & support | 2021 |
| Rose's Roofing Limited | Construction | 2026 |
| Roseforth Homes Ltd | Real estate | 2025 |
| Rossigo Driving School Ltd | Extraterritorial | 2023 |
| Rother Projects 2017 Limited | Real estate | 2017 |
| Rothwell Design Services Limited | Professional & scientific | 1996 |
| Roundpeg Solutions Limited | Professional & scientific | 2014 |
| Route 66 Burger Bar Limited | Hospitality | 2026 |
| Rowan a Adams Masonry Limited | Construction | 2013 |
| Rowan Tree Ventures Ltd | Construction | 2024 |
| Rowans Hospice | Health & social care | 1988 |
| Rowbrey Property Limited | Construction | 2025 |
| Rowing Components Limited | Wholesale & retail | 2024 |
| Rowlands Castle (Building & Developments) Ltd | Construction | 2012 |
| Rowlands Castle Scaffolding Limited | Construction | 2010 |
| Rowsley Grange Management Limited | Households | 2008 |
| Roxburgh Building Services Limited | Construction | 2022 |
| Rozen Property Limited | Households | 2024 |
| Rozh Barber Ltd | Other services | 2022 |
| Rozita Hair & Beauty Ltd | Other services | 2019 |
| RP Commercial Services Limited | Administrative & support | 2023 |
| RP Consultancy South Ltd | Financial services | 2026 |
| RP3 Developments Ltd | Construction | 2025 |
| Rrse Engineering Limited | Professional & scientific | 2013 |
| Rrxco Group Ltd | Financial services | 2026 |
| Rrxco Ltd | Professional & scientific | 2022 |
| Rsgardeningservices Ltd | Administrative & support | 2014 |
| Rsvp Holdings Limited | Real estate | 2022 |
| RT FRY Limited | Hospitality | 2025 |
| RTC Consulting Ltd | Professional & scientific | 2009 |
| Rubbish Clearance Portsmouth Ltd | Water & waste | 2022 |
| Rubiks Forward Limited | Information & communication | 2020 |
| Ruby's OFF Licence Stores Ltd | Wholesale & retail | 2015 |
| Rudolph Court Management Company Limited | Households | 1973 |
| RUG Angels Ltd | Other services | 2014 |
| Rugby Through the Leagues Ltd | Information & communication | 2024 |
| Rundle Properties Limited | Real estate | 2001 |
| Rusalka Swimming Limited | Education | 2008 |
| Rushmere Corner CIC | Agriculture & fishing | 2022 |
| Rushmere Country Estates LLP | | 2010 |
| Rushmere Farm Limited | Agriculture & fishing | 1948 |
| Rushmore Studios Limited | Manufacturing | 2022 |
| Russell Electrical Contractors Limited | Construction | 2023 |
| Russells Catering Ltd | Hospitality | 2024 |
| Rustlings Freehold Limited | Households | 2007 |
| RWJ Profit Academy Ltd | Information & communication | 2026 |
| RWM Property Limited | Real estate | 2024 |
| RY Consultancy Group Ltd | Arts & recreation | 2025 |
| Rycroft Kitchens Limited | Manufacturing | 2012 |
| Ryde N Slide Ltd | Arts & recreation | 2025 |
| Ryred Limited | Information & communication | 2021 |
| S & D Wilson Limited | Construction | 2015 |
| S & H Property Services Limited | Construction | 2011 |
| S & I Storage Limited | Real estate | 2024 |
| S & J Cosgrove Limited | Construction | 2005 |
| S & S PUB and Bar (Portchester) Ltd | Hospitality | 2025 |
| S & V P Hire Services Ltd | Transport & logistics | 2022 |
| S Atelier - Art & Interior Consultancy Ltd | Professional & scientific | 2026 |
| S Chaplin Advice Ltd | Financial services | 2021 |
| S D B Construction Southern Limited | Construction | 2012 |
| S D Services Group Ltd | Professional & scientific | 2023 |
| S D T Small Business Services Limited | Administrative & support | 2017 |
| S E I Solutions Ltd | Construction | 2015 |
| S F J Construction Limited | Construction | 2009 |
| S Figg Design Services Limited | Information & communication | 2014 |
| S Giles Bathrooms Limited | Construction | 2022 |
| S H a Enterprises Limited | Construction | 2019 |
| S Holdway Holdings Limited | Financial services | 2015 |
| S I a Housing Limited | Real estate | 2021 |
| S I a NDT & Inspections Ltd | Mining & quarrying | 2022 |
| S Johnston Property Holdings Limited | Real estate | 2023 |
| S Lambert Building & Roofing Limited | Construction | 2019 |
| S R Electrical Solutions Ltd | Construction | 2025 |
| S R M GAS Solutions Ltd | Construction | 2017 |
| S R W Services Ltd | Construction | 2022 |