| Roosters Greek Limited | Hospitality | 2024 |
| Roosters Piri Grill Woking Limited | Hospitality | 2025 |
| Roosters Transport Ltd | Transport & logistics | 2011 |
| Rootanz Ltd | Wholesale & retail | 2025 |
| Rooted Paths CIC | Education | 2024 |
| Rooted Youth CIC | Education | 2026 |
| Rootic Ltd | Administrative & support | 2018 |
| Roqitship Ltd | Information & communication | 2024 |
| Rosa Catering Services Limited | Manufacturing | 2026 |
| Rosa Raymond Business Consulting Limited | Information & communication | 2025 |
| Rosanosa Foundation CIC | Health & social care | 2022 |
| Rosca Elite Construction Ltd | Construction | 2026 |
| Rose D'Azure Ltd | Administrative & support | 2017 |
| Rose Inn Wakering Ltd | Hospitality | 2026 |
| Rose J'Adore Ltd | Wholesale & retail | 2016 |
| Rose Lane Trading Ltd | Other services | 2016 |
| Rose Luxury Transfers Ltd | Transport & logistics | 2025 |
| Rose Prperty Ltd | Real estate | 2026 |
| Rosecastle Consulting Ltd | Real estate | 2015 |
| Rosemere Aesthetics and Wellness Clinic Ltd | Health & social care | 2026 |
| Rosemount Independent Asset Management Limited | Financial services | 1993 |
| Rosemount Independent Financial Advisers Limited | Financial services | 2010 |
| Rosetta Developments Limited | Construction | 2017 |
| Rosetta Investments Limited | Real estate | 2012 |
| Rosh & Feering Limited | Agriculture & fishing | 2026 |
| Roshnihetal Limited | Real estate | 2007 |
| Roshsunday Ltd | Hospitality | 2024 |
| Rosieandrexpets Ltd | Wholesale & retail | 2024 |
| Rosim Transport Ltd | Transport & logistics | 2016 |
| Rosmart Entertainment Limited | Arts & recreation | 2025 |
| Ross Beard Productions Limited | Information & communication | 2008 |
| Ross Bros Limited | Construction | 2003 |
| Rosso Corse Limited | Wholesale & retail | 2008 |
| Rosy New ERA Healthcare Services Limited | Health & social care | 2014 |
| Rotiwala Ghar KI Roti Ltd | Hospitality | 2024 |
| Rotwal Holdings Ltd | Real estate | 2022 |
| Rough and Tough Ltd | Wholesale & retail | 2014 |
| Round Pegs Property Recruitment Ltd | Administrative & support | 2014 |
| Routego Ltd | Administrative & support | 2025 |
| Routemaster Hire Limited | Administrative & support | 2005 |
| Routewise Ltd | Information & communication | 2024 |
| ROV Cars Ltd | Wholesale & retail | 2023 |
| Rovixo Ltd | Wholesale & retail | 2025 |
| Rowing & T-Shirts Ltd | Education | 2023 |
| Rowings Cool CIC | Arts & recreation | 2026 |
| Rowlands Property Management Ltd | Administrative & support | 2024 |
| Royal Court (Enfield) RTM Company Limited | Households | 2017 |
| Royalti London Ltd | Wholesale & retail | 2018 |
| Royce Indrive Ltd | Transport & logistics | 2024 |
| RP & MM Services Ltd | Professional & scientific | 2022 |
| RP Autos Romford Limited | Wholesale & retail | 2026 |
| RP Grow Trading Ltd | Construction | 2021 |
| RP Line Construction Ltd | Construction | 2014 |
| RP Medicore Ltd | Health & social care | 2025 |
| RPL (London) Ltd | Construction | 2014 |
| RPM Design & Research Services Ltd | Professional & scientific | 2024 |
| RR Beauty Hub Ltd | Other services | 2023 |
| RR Double Glazing Limited | Construction | 2024 |
| RR Onsite Ltd | Wholesale & retail | 2019 |
| Rrising Construction Ltd | Construction | 2019 |
| RRR Homes Ltd | Real estate | 2023 |
| Rrra Limited | Real estate | 2025 |
| RRS Holdings Group Ltd | Professional & scientific | 2026 |
| RS & BT Properties Ltd | Real estate | 2024 |
| RS Cloud ERP Support Ltd | Information & communication | 2021 |
| RS Company’S Ltd | Information & communication | 2025 |
| RS Fire Doors Ltd | Public administration | 2025 |
| RS Gents Barbers Ltd | Other services | 2025 |
| RS Motor Traders Ltd | Wholesale & retail | 2021 |
| RS Prestige Motors Limited | Wholesale & retail | 2025 |
| RS24 Property Investments Ltd | Construction | 2024 |
| RSA Home Investments Ltd | Real estate | 2026 |
| Rsbs Engineering Ltd | Construction | 2022 |
| RSC Developers Ltd | Real estate | 2022 |
| Rscb Homes & Co Ltd | Real estate | 2023 |
| RSG Advisory Limited | Professional & scientific | 2015 |
| Rsgm Ltd | Wholesale & retail | 2021 |
| RSJ Property Group LLP | | 2024 |
| RSK Assets Ltd | Health & social care | 2019 |
| RSK Properties (London) Limited | Real estate | 2016 |
| RSK Technologies Ltd | Information & communication | 2018 |
| RSK Tyres (Collier ROW) Ltd | Wholesale & retail | 2024 |
| RSK Tyres (Manor Park) Ltd | Wholesale & retail | 2024 |
| RSM Security Services Ltd | Administrative & support | 2026 |
| RSP Consultancy Ltd | Information & communication | 2006 |
| RSV Wholesale and Retail Ltd | Wholesale & retail | 2024 |
| RT Door Solutions Ltd | Professional & scientific | 2024 |
| RT Electrical Contractors Ltd | Construction | 2019 |
| RTP Ultimate Haven Children's Care Limited | Real estate | 2018 |
| RTS Works Ltd | Construction | 2022 |
| Rubbish Heroes Ltd | Water & waste | 2026 |
| Rubicon Management Company Limited | Households | 2005 |
| Ruby 2 Ltd | Extraterritorial | 2023 |
| Ruby ROO Ltd | Manufacturing | 2021 |
| Ruby Room Limited | Wholesale & retail | 2009 |
| Ruby's Coaching Centre Limited | Professional & scientific | 2022 |
| Rudd Building Works Limited | Construction | 2024 |
| Rudko Family Ltd | Construction | 2025 |
| Rudrax Shipping Limited | Wholesale & retail | 2023 |
| Rudy's Deli Limited | Hospitality | 2017 |