| R & J Grounds Maintenance Ltd | Construction | 2023 |
| R Burns Consultancy Ltd | Construction | 2026 |
| R F Productions Southern Ltd | Hospitality | 2019 |
| R G B Construction Ltd. | Construction | 2012 |
| R S Pagham Ltd | Hospitality | 2024 |
| R W Electrical (Southern) Limited | Construction | 2015 |
| R.P. Delaney Limited | Hospitality | 2003 |
| RA Business Limited | Wholesale & retail | 2021 |
| Race & Retro Engineering Ltd | Wholesale & retail | 2018 |
| Rachel Aked Ltd | Other services | 2013 |
| Radiant Exterior Cleaning Ltd | Administrative & support | 2025 |
| Radio Respect CIC | Information & communication | 2017 |
| Radology Ltd | Professional & scientific | 2013 |
| Radtransport Ltd | Transport & logistics | 2022 |
| Rafal Zoladz Ltd | Administrative & support | 2025 |
| Rage Auto Centre Ltd | Manufacturing | 2026 |
| Ragless Electrical Services Limited | Construction | 2022 |
| Rainey's PIE & Mash Limited | Hospitality | 2026 |
| Rainmaker Irrigation Systems Ltd | Administrative & support | 2025 |
| Rako J Ltd | Wholesale & retail | 2021 |
| Ramus Care Limited | Health & social care | 2023 |
| Raplex Limited | Other services | 2014 |
| Rapmay Properties Limited | Real estate | 1977 |
| Rare Rabbit Ltd | Construction | 2025 |
| Rawlins Builders Limited | Construction | 2025 |
| Raymede House Management Company Limited | Households | 2021 |
| Rayners Estate Management Limited | Professional & scientific | 2010 |
| Rayners Lettings Limited | Real estate | 2003 |
| Rayners Town & Country Limited | Real estate | 1987 |
| Rayswebshop Ltd | Wholesale & retail | 2023 |
| Rayturner.Dev Ltd | Information & communication | 2021 |
| Rayturner.Tech Ltd | Information & communication | 2020 |
| Rayturners Ltd | Information & communication | 2019 |
| RB Website Design Ltd | Information & communication | 2023 |
| RBC Heating Solutions Ltd. | Construction | 2017 |
| RBZ Professional Services Limited | Health & social care | 2025 |
| RC Fleet Installions Ltd. | Manufacturing | 2017 |
| RD Desi Bazar Ltd | Wholesale & retail | 2025 |
| RD QS Consultancy Ltd | Professional & scientific | 2023 |
| RDA 1 Limited | Professional & scientific | 2012 |
| RDS Carebuild Limited | Construction | 2024 |
| RDS Composites Ltd | Manufacturing | 2025 |
| Real World Publishing Limited | Manufacturing | 1999 |
| Real-Link Solutions Ltd | Information & communication | 2024 |
| Realign Aesthetics Ltd | Extraterritorial | 2025 |
| Rebearth Your Soul Ltd | Administrative & support | 2025 |
| Recruit Property Professionals Limited | Administrative & support | 2020 |
| Recspec Recruitment Limited | Administrative & support | 2024 |
| Rectory Gardens Block a Management Co. Limited | Households | 1994 |
| Rectory Gardens Block B Management Co. Limited | Households | 1992 |
| Rectory Gardens Block C Management Co. Limited | Households | 1992 |
| Recycle ANY Car Limited | Other services | 2024 |
| Red Balloon Publishing Ltd | Information & communication | 2019 |
| Red Hot Lava Ltd | Wholesale & retail | 2022 |
| Red Queen Advisory Limited | Professional & scientific | 2024 |
| Redwood & Sons Limited | Real estate | 2020 |
| Reel Deep Ltd | Wholesale & retail | 2026 |
| Regal Fish & Chips Limited | Hospitality | 2014 |
| Regatta Management Limited | Real estate | 2023 |
| Regatta Properties Limited | Real estate | 1998 |
| Regency Installations Limited | Construction | 2021 |
| Regent House (Bognor) Limited | Real estate | 2016 |
| Regent Mews Residents Management Limited | Real estate | 1995 |
| Regent Property Holdings Ltd | Construction | 2006 |
| Regent Re-Gen Ltd | Construction | 2021 |
| Regis Centre Ltd | Arts & recreation | 2007 |
| Regis Consultants Ltd. | Professional & scientific | 2003 |
| Regis Development Services Ltd | Construction | 2015 |
| Regis Event Design Limited | Administrative & support | 2019 |
| Regis Foods Limited | Wholesale & retail | 2023 |
| Regis Gate Limited | Professional & scientific | 2004 |
| Regis Gymnastics CIC | Arts & recreation | 2013 |
| Regis Lodge Ltd | Real estate | 2023 |
| Regis Lodge Property Ltd | Real estate | 2026 |
| Regis Machinery (Sales) Limited | Wholesale & retail | 1977 |
| Regis Machinery (Sussex) Limited | Extraterritorial | 1966 |
| Regis Mobile Repairs Ltd | Wholesale & retail | 2020 |
| Regis Motors Ltd | Wholesale & retail | 2019 |
| Regis Properties and Rentals Limited | Real estate | 2016 |
| Regis Removals Limited | Transport & logistics | 2008 |
| Regnum Place Management Company Limited | Households | 2015 |
| Remarkably Human Ltd. | Information & communication | 2018 |
| Remedy Removals Ltd | Transport & logistics | 2024 |
| Remote Professionals Ltd | Professional & scientific | 2020 |
| Renta Scoota Ltd | Administrative & support | 2008 |
| Rental Nest Limited | Real estate | 2025 |
| Resourceful Community Scrapstore CIC | Water & waste | 2023 |
| Restaurant 359 Ltd | Hospitality | 2024 |
| Resurrection Scaffolding Ltd | Construction | 2026 |
| Retail Shops (Lowestoft) Limited | Construction | 1960 |
| Retro Sweeties Ltd | Wholesale & retail | 2026 |
| Reweb Ltd | Wholesale & retail | 2021 |
| Reykaut Tech Ltd | Health & social care | 2026 |
| Reyleigh Associates Ltd | Professional & scientific | 2025 |
| Reyleigh Property & Investments Ltd | Real estate | 2026 |
| RF Medical Services Limited | Real estate | 2021 |
| RG Fryery Limited | Hospitality | 2025 |
| RGA Electrical Solutions Ltd | Construction | 2015 |
| Rhodes 2 Renovations Limited | Construction | 2017 |
| Richard Jones Building Limited | Construction | 2002 |