| Rgdf Properties Ltd | Real estate | 2026 |
| Rgeg UK Ltd | Administrative & support | 2025 |
| RGH Limited | Real estate | 2018 |
| Rgmb Building Services Limited | Construction | 2014 |
| Rgrace Events Ltd | Administrative & support | 2024 |
| RH Electrical Contractors Kent Ltd | Construction | 2022 |
| RH Landscaping Ltd | Administrative & support | 2021 |
| RH MEP Consulting Limited | Administrative & support | 2026 |
| Rh-Ts Limited | Administrative & support | 2004 |
| Rheignite Marketing Limited | Wholesale & retail | 2025 |
| Rhi-Belle Consultancy Ltd | Administrative & support | 2018 |
| RHIZOME2 Hydrogen Limited | Professional & scientific | 2022 |
| RHL Electrical Services Ltd | Construction | 2022 |
| Rhysrahl Company Limited | Manufacturing | 2014 |
| Rianne Jordaine Projects Ltd | Professional & scientific | 2024 |
| Ribbed Facilities Ltd | Construction | 2025 |
| Ricas Services Ltd | Construction | 2018 |
| Rice Fish Co Ltd | Real estate | 2025 |
| Rich T Management Limited | Professional & scientific | 2003 |
| Richaman House Limited | Manufacturing | 2026 |
| Richie Construction Limited | Construction | 2025 |
| Richie Electrical and Building Contractor Limited | Construction | 2024 |
| Richman Real Estate Limited | Financial services | 2024 |
| Rickards Entertainments Limited | Hospitality | 2016 |
| Rickner Charles Limited | Real estate | 2017 |
| Ridge Property(Kent) Ltd | Real estate | 2022 |
| Ridgeway Contracts Limited | Health & social care | 2017 |
| Right Height Limited | Manufacturing | 2014 |
| Right Match Recruitment Group Limited | Administrative & support | 2022 |
| Right Time Paving Limited | Administrative & support | 2018 |
| Righteous Records Ltd | Information & communication | 2023 |
| Rights Angels Limited | Professional & scientific | 2013 |
| Rigmb Limited | Information & communication | 2017 |
| Rigutsmile Ltd | Professional & scientific | 2024 |
| Rihale-Rosa Care Services Limited | Health & social care | 2024 |
| Rikki Levitt Ltd | Information & communication | 2024 |
| Riley's Electrical & Security Ltd | Construction | 2023 |
| Rilmos Resources Limited | Information & communication | 2010 |
| Rilumoka Ltd | Wholesale & retail | 2026 |
| Rimzi Dartford Ltd | Wholesale & retail | 2021 |
| Rina Motor Trade and Transport Ltd | Wholesale & retail | 2018 |
| Ringslade Hall RTM Company Ltd | Households | 2015 |
| Rion Limited | Administrative & support | 2011 |
| Ripley Photography Limited | Information & communication | 2006 |
| Rising Capital Group Ltd | Professional & scientific | 2025 |
| Rite Consultants Limited | Professional & scientific | 2019 |
| Riteway Healthcare Limited | Health & social care | 2023 |
| Ritual & Foundry Ltd | Wholesale & retail | 2026 |
| Ritual Plumbing Ltd | Construction | 2025 |
| Riverbourne Management Company Limited | Households | 2019 |
| Riverside Raiders Basketball Club CIC | Education | 2025 |
| Riverside Restaurant Sudbury Ltd | Hospitality | 2019 |
| Riverston International Limited | Education | 2014 |
| Riverview Media Ltd | Information & communication | 2017 |
| Rixos Catering Limited | Administrative & support | 2017 |
| Rixos London Limited | Hospitality | 2017 |
| RJB Construction & Maintenance Ltd | Construction | 2018 |
| RJC Controls Ltd. | Construction | 2018 |
| Rjcd Limited | Real estate | 2018 |
| RJJ Limited | Real estate | 2019 |
| RJS Resource Ltd | Administrative & support | 2014 |
| RJT Capital Ltd | Financial services | 2023 |
| RK Roofs & Building Ltd | Construction | 2019 |
| Rk&J Consulting Ltd | Professional & scientific | 2020 |
| Rk's Cleaning Service Ltd | Manufacturing | 2026 |
| RKP Haulage Limited | Transport & logistics | 2022 |
| RKT Trading Limited | Wholesale & retail | 2019 |
| RL BI Solutions Limited | Information & communication | 2014 |
| RL Info Technologies Ltd | Information & communication | 2022 |
| Rl-Maven Limited | Other services | 2020 |
| Rlvp Property Limited | Real estate | 2025 |
| RM Lantern Ltd | Construction | 2025 |
| RM Property Maintenance Ltd | Construction | 2008 |
| RM1 Tyres Ltd | Wholesale & retail | 2020 |
| RMA Housing Limited | Real estate | 2020 |
| Rmds Consulting Limited | Professional & scientific | 2015 |
| RMJ Building Services Limited | Construction | 2014 |
| RMS Care Providers Ltd | Administrative & support | 2022 |
| RMZ Tyres Limited | Wholesale & retail | 2025 |
| RN Gardenworks Ltd | Administrative & support | 2025 |
| RNA Medical Limited | Health & social care | 2016 |
| Rngroundworks and Landscaping Ltd | Construction | 2019 |
| ROA Associates Ltd | Information & communication | 2021 |
| Roadfill Limited | Manufacturing | 2018 |
| Roadhouse Building & Civil Engineering Ltd. | Construction | 2011 |
| Roadhouse Homes Ltd | Financial services | 2025 |
| Roadhouse Property Services Ltd. | Real estate | 2016 |
| Roadside Eater Ltd | Hospitality | 2025 |
| Roadspace Ltd | Administrative & support | 2020 |
| Roar Music Academy Ltd | Education | 2014 |
| Roast and Tongue Decorating Specialists Ltd. | Construction | 2012 |
| Robaux & Associates Limited | Real estate | 2025 |
| Robert Green Images Ltd | Administrative & support | 2006 |
| Robert Tomlinson Ltd | Extraterritorial | 2011 |
| Robertgroupuk Limited | Real estate | 2024 |
| Roblett Electrical Supplies Limited | Wholesale & retail | 1995 |
| Roca Buy Ltd. | Wholesale & retail | 2023 |
| Roca Trading Import & Export Ltd | Wholesale & retail | 2011 |
| Rochester Property Group Ltd | Real estate | 2025 |
| Rock Tower Services Limited | Administrative & support | 2021 |