| RL Burgers & Shakes Ltd | Hospitality | 2025 |
| RLA Eden Developments Ltd | Construction | 2023 |
| RLA Venus Limited | Construction | 2025 |
| RLM Garage Limited | Wholesale & retail | 2026 |
| RLM MOT Centre Limited | Wholesale & retail | 2025 |
| Rlmr LLP | | 2015 |
| RLR Business Solutions Limited | Wholesale & retail | 1998 |
| RM Beauty Salon Ltd | Education | 2012 |
| RM Chauffeuring Ltd | Transport & logistics | 2025 |
| RM Design Ltd | Information & communication | 2023 |
| RM International Holding Ltd | Real estate | 2018 |
| RM Smiles Ltd | Health & social care | 2022 |
| RM Vehicles Holding Ltd | Financial services | 2024 |
| RMB Testing Ltd | Construction | 2014 |
| RMC Build Solutions Ltd | Construction | 2022 |
| RMC Plumbing Services Limited | Construction | 2025 |
| RMC Serradinho Limited | Health & social care | 2019 |
| RMD Inc Ltd | Real estate | 2016 |
| RMD Network Solutions Ltd | Information & communication | 2025 |
| Rmdp Properties Limited | Construction | 2003 |
| RMH Investments Holdings Ltd | Financial services | 2024 |
| Rmkh Services Limited | Health & social care | 2018 |
| RML Construction Ltd | Manufacturing | 2022 |
| RML Rigging Services Ltd | Professional & scientific | 2014 |
| RMM Cash and Carry Limited | Wholesale & retail | 2025 |
| Rmnp Ltd | Wholesale & retail | 2020 |
| RMP Services Ltd | Wholesale & retail | 2024 |
| RMR Partnership LLP | | 2013 |
| Rmrd Services Limited | Administrative & support | 2026 |
| RMS Planning Ltd | Professional & scientific | 2026 |
| RMS Property Maintenance Ltd | Real estate | 2016 |
| RMT Design and Build Ltd | Construction | 2020 |
| Rmtl Holdings Limited | Financial services | 2023 |
| Rmtl Investments Limited | Real estate | 2023 |
| Rmtl Partners Limited | Real estate | 2025 |
| Rmtl Properties SPV1 Limited | Real estate | 2025 |
| RMV Consultancy Limited | Professional & scientific | 2023 |
| RMV Interiors Ltd | Construction | 2021 |
| RMV Technologies UK Limited | Information & communication | 2016 |
| RMZ Impex Ltd | Wholesale & retail | 2026 |
| RN Courier Ltd | Transport & logistics | 2022 |
| RN Garage Limited | Wholesale & retail | 2025 |
| Rn&D & Co Limited | Other services | 2018 |
| Rnbp Properties Ltd | Real estate | 2017 |
| RND Trading Ltd | Wholesale & retail | 2020 |
| Rndk Consultancy Limited | Information & communication | 2022 |
| Rngreza Ltd | Wholesale & retail | 2024 |
| Rnhv Consultancy Services Ltd | Information & communication | 2011 |
| RNI7 Limited | Information & communication | 2025 |
| RNJ Holdings Limited | Financial services | 2024 |
| RNK Holding Ltd | Financial services | 2024 |
| RNK Investments Limited | Construction | 2019 |
| Rnns Chingford Ltd | Real estate | 2022 |
| Rnns Investments and Holdings Ltd | Real estate | 2021 |
| Rnns Property Group Limited | Real estate | 2022 |
| RNO Trading Ltd | Wholesale & retail | 2024 |
| RNR Global Limited | Information & communication | 2008 |
| RNR Stays Limited | Real estate | 2022 |
| Rnrs Properties Ltd | Real estate | 2024 |
| RNS London Ltd | Wholesale & retail | 2022 |
| RO Skills Group Ltd | Construction | 2015 |
| RO Team Services Ltd | Construction | 2018 |
| Roachy’S Rigs Ltd | Construction | 2023 |
| Road to Tipsy Town Ltd | Hospitality | 2017 |
| ROB VS Ltd | Construction | 2018 |
| Robbien Limited | Professional & scientific | 2019 |
| Robe London Limited | Manufacturing | 2025 |
| Robert Campbell London Limited | Financial services | 1994 |
| Robert Construction 2025 Ltd | Construction | 2025 |
| Robert Ditcham Limited | Professional & scientific | 2011 |
| Robert English Electrical Services Limited | Construction | 2006 |
| Robert Terry Limited | Real estate | 2008 |
| Robert Waugh Limited | Arts & recreation | 2016 |
| Robertson Phillips Limited | Extraterritorial | 2013 |
| Robertsons Rental Company Limited | Real estate | 2021 |
| Robi Homes LLP | | 2024 |
| Robin Green Properties Limited | Real estate | 2017 |
| Robin Properties Limited | Administrative & support | 2014 |
| Robinhood Productions Ltd | Information & communication | 2023 |
| Robinson & YU Ltd | Real estate | 2020 |
| Robinson Davies Properties Limited | Real estate | 2015 |
| Robinwood Place Ltd | Real estate | 2022 |
| Robiton Limited | Wholesale & retail | 1995 |
| Roca MAR Ltd | Administrative & support | 2025 |
| Roche Communications Limited | Wholesale & retail | 2006 |
| Roche Welding Services Limited | Construction | 2014 |
| Rochester Films Limited | Other services | 1993 |
| Rocheville Limited | Real estate | 2012 |
| Rochfield Investments Limited | Real estate | 1992 |
| Rochfort Partners Limited | Administrative & support | 2024 |
| Rock on Records Ltd | Wholesale & retail | 2022 |
| Rockall Construction Ltd | Construction | 2015 |
| Rockdrops Limited | Arts & recreation | 2006 |
| Rocket Estates Limited | Real estate | 2012 |
| Rocketjam Limited | Professional & scientific | 2023 |
| Rockpool Consultancy Group Ltd | Arts & recreation | 2025 |
| Rockpool Management Group Ltd | Arts & recreation | 2021 |
| Rockr Technologies Ltd | Information & communication | 2021 |
| Rocks Investment Limited | Construction | 2020 |
| Rocks Plant and Construction Srvices Ltd | Administrative & support | 2021 |