| R & K Properties London Ltd | Real estate | 2022 |
| R & L Strathern Limited | Agriculture & fishing | 2026 |
| R & M Church Limited | Real estate | 2026 |
| R & R Premier Construction London Ltd | Construction | 2024 |
| R & R the Hair LAB Ltd | Other services | 2025 |
| R - Weld Limited | Other services | 2017 |
| R and H (EN) Ltd | Hospitality | 2020 |
| R B Installations (Essex) Limited | Construction | 2021 |
| R Barlow Memorials Limited | Manufacturing | 2015 |
| R Gordon Limited | Information & communication | 2004 |
| R H Gardening Limited | Administrative & support | 2022 |
| R Hart Plumbing and Heating Ltd | Construction | 2026 |
| R J Brett Contracts Limited | Construction | 2005 |
| R J Osborn Printers & Stationers Ltd | Manufacturing | 2005 |
| R K Finishing Group Ltd | Construction | 2016 |
| R K Flooring Ltd | Construction | 2013 |
| R L Lissimore LLP | | 2023 |
| R M Infrastructure Ltd | Construction | 2017 |
| R M Sea Fish Limited | Agriculture & fishing | 2003 |
| R P Automotive Solutions Limited | Wholesale & retail | 2025 |
| R S Clark Electrical Ltd | Construction | 2015 |
| R S Procurement Ltd | Administrative & support | 2021 |
| R S Services (Eastern) Limited | Administrative & support | 2003 |
| R Schultz Consulting Ltd | Professional & scientific | 2024 |
| R T W Services Limited | Other services | 2020 |
| R Wright Developments Ltd | Professional & scientific | 2013 |
| R&A Groundwork Services Ltd | Construction | 2024 |
| R&B Property Investments Limited | Real estate | 2004 |
| R&I-Services Ltd | Manufacturing | 2015 |
| R&L Marfleet Holdings Limited | Financial services | 2020 |
| R&M Homewood Properties Limited | Real estate | 2019 |
| R&P Davies GAS Fitters Ltd | Extraterritorial | 2018 |
| R&P Davies Plumbing Limited | Construction | 2013 |
| R&R Cottages Ltd | Real estate | 2021 |
| R&R Sushi Limited | Wholesale & retail | 2025 |
| R&V Home Improvement Ltd | Construction | 2023 |
| R&Z Contractors Limited | Construction | 2026 |
| R. Beaver Brickwork Limited | Administrative & support | 2016 |
| R. Cheeseman Property Limited | Other services | 2014 |
| R. S. Brown (Autosales) Limited | Wholesale & retail | 1978 |
| R. T. Roofing Services Ltd. | Construction | 1999 |
| R. W. Hill (Felixstowe) Limited | Construction | 1996 |
| R.A. Lock Electrical Limited | Construction | 2010 |
| R.C.T. Services Limited | Information & communication | 1999 |
| R.E.D. Commercial Management Limited | Professional & scientific | 2015 |
| R.F. West Limited | Construction | 2008 |
| R.H. Wilden & Sons Limited | Agriculture & fishing | 1981 |
| R.J.H. Builders Limited | Construction | 2014 |
| R.L GAS Ltd | Energy | 2021 |
| R.M Indian Limited | Hospitality | 2012 |
| R.M.D Cladding Ltd | Construction | 2017 |
| R.P. Data Limited | Information & communication | 1988 |
| R.Partridge & Son.Limited | Agriculture & fishing | 1949 |
| R.S Fencing & Landscaping Ltd | Administrative & support | 2023 |
| R.W. Hill (Piling) Limited | Construction | 1985 |
| R2ED Ltd | Administrative & support | 2018 |
| Ra-Smart Investments Ltd | Real estate | 2021 |
| RAB Maintenance Services Ltd | Manufacturing | 2016 |
| Rabbit Creative Ltd | Professional & scientific | 2018 |
| Race Tyres and Garage Ltd | Wholesale & retail | 2026 |
| Rachel Garnish Travel Ltd | Administrative & support | 2018 |
| Rachel the Hygienist Ltd | Health & social care | 2023 |
| Racing Tabby Ltd | Manufacturing | 2019 |
| Racko Limited | Wholesale & retail | 2019 |
| Racz Ltd | Wholesale & retail | 2025 |
| Rad-Line Limited | Wholesale & retail | 2023 |
| Radford Court Association Limited, | Households | 1963 |
| Radford Land Limited | Administrative & support | 2014 |
| Radiance Ventures Limited | Wholesale & retail | 2003 |
| Radiant Aesthetic Services Limited | Other services | 2020 |
| Radicaln Limited | Wholesale & retail | 2014 |
| Radient Heating Ltd | Construction | 2014 |
| Radish Investments Limited | Administrative & support | 2013 |
| Radius Business Ltd | Other services | 2011 |
| Rads Consulting Limited | Information & communication | 2025 |
| Radwan Enterprises Limited | Financial services | 2024 |
| Radwan Medical Limited | Administrative & support | 2017 |
| Rafa Aviation Ltd | Manufacturing | 2016 |
| Raging Tides Productions Ltd | Information & communication | 2025 |
| Rags to Ricks Ltd | Wholesale & retail | 2025 |
| Rahaf Products Limited | Wholesale & retail | 2023 |
| Rahb Investments Limited | Real estate | 2022 |
| Rahdari Ltd | Wholesale & retail | 2024 |
| Raheem EN Ltd | Hospitality | 2020 |
| Rail Track Services Limited | Transport & logistics | 2021 |
| Railcoat Applications Limited | Administrative & support | 2024 |
| Rainbow Living Limited | Health & social care | 2011 |
| Rainbow Nursery (Weeley) LLP | | 2008 |
| Raincatcha Ltd | Manufacturing | 2004 |
| Raine Relocations Ltd | Construction | 2025 |
| Raines Digital Ltd | Information & communication | 2026 |
| Rainleaf Limited | Wholesale & retail | 1996 |
| Rainleaf London Ltd | Wholesale & retail | 2008 |
| Raise the Bar Sports Consulting Limited | Professional & scientific | 2018 |
| Raised Consultancy Limited | Professional & scientific | 2019 |
| Raising Champions Ltd | Health & social care | 2022 |
| Raitech IT Services/Trainings Ltd | Information & communication | 2022 |
| Rajalakshmi Properties Limited | Real estate | 2022 |
| Rajputh Restaurant Ltd | Hospitality | 2023 |
| Rake Addicts.Com Limited | Arts & recreation | 2009 |