| Rouse Lettings Limited | Real estate | 2023 |
| Rouse Surveying Limited | Professional & scientific | 2025 |
| Roussys Ltd | Information & communication | 2000 |
| Routab Limited | Manufacturing | 2025 |
| Route 64 Ltd | Hospitality | 2018 |
| Route One Highways Limited | Extraterritorial | 2017 |
| Route One Holdings (Wakefield) Limited | Administrative & support | 2011 |
| Route One Infrastructure Limited | Construction | 2005 |
| Route One Rail Limited | Extraterritorial | 2015 |
| Routeset Limited | Real estate | 1987 |
| Routexr Ltd | Transport & logistics | 2026 |
| Routh Consulting Limited | Professional & scientific | 2023 |
| Rouute Energy Limited | Manufacturing | 2021 |
| Rovan Furniture Ltd | Wholesale & retail | 2025 |
| Rowan Consumer Products (Holdings) Limited | Manufacturing | 2011 |
| Rowan Green Holdings Limited | Real estate | 2025 |
| Rowe Consulting Ltd | Professional & scientific | 2026 |
| Rowland and SON Civil Engineering Ltd | Construction | 2025 |
| Rowley Clinical Neuropsychology Services Limited | Health & social care | 2022 |
| Rowley Medico-Legal Services Limited | Health & social care | 2026 |
| Rowley Property Ltd | Real estate | 2020 |
| Roxbro Properties Ltd | Financial services | 2008 |
| Roxbrough Court Limited | Real estate | 2007 |
| Roxburgh House Management Company (Hgte) Limited | Households | 2003 |
| Roxlogistics Ltd | Transport & logistics | 2023 |
| Roxy Ball Room (Birmingham Three) Limited | Hospitality | 2022 |
| Roxy Ball Room (Birmingham Two) Ltd | Extraterritorial | 2020 |
| Roxy Ball Room (Birmingham) Ltd | Professional & scientific | 2019 |
| Roxy Ball Room (Boar Lane) Ltd | Extraterritorial | 2019 |
| Roxy Ball Room (Cheltenham) Ltd | Extraterritorial | 2023 |
| Roxy Ball Room (Edinburgh) Ltd | Professional & scientific | 2021 |
| Roxy Ball Room (Leeds Two) Limited | Hospitality | 2018 |
| Roxy Ball Room (Leicester) Ltd | Professional & scientific | 2023 |
| Roxy Ball Room (Liverpool Two) Ltd | Extraterritorial | 2016 |
| Roxy Ball Room (Liverpool) Ltd | Professional & scientific | 2015 |
| Roxy Ball Room (Manchester Two) Ltd | Hospitality | 2018 |
| Roxy Ball Room (Manchester) Ltd | Professional & scientific | 2015 |
| Roxy Ball Room (Nottingham Two) Ltd | Professional & scientific | 2020 |
| Roxy Ball Room (Nottingham) Ltd | Professional & scientific | 2016 |
| Roxy Ball Room (Sheffield) Ltd | Professional & scientific | 2021 |
| Roxy Ball Room Ltd | Professional & scientific | 2013 |
| Roxy Lanes (Bond Street) Ltd | Extraterritorial | 2019 |
| Roxy Lanes (Bristol) Ltd | Professional & scientific | 2021 |
| Roxy Lanes (Cardiff) Ltd | Professional & scientific | 2020 |
| Roxy Lanes (Cheltenham) Ltd | Professional & scientific | 2023 |
| Roxy Lanes Ltd | Professional & scientific | 2013 |
| Roxy Leisure (Airedale House) Limited | Extraterritorial | 2022 |
| Roxy Leisure Construction Ltd | Construction | 2022 |
| Roxy Leisure Ltd | Professional & scientific | 2015 |
| Roxy’S Beauty Salon Limited | Other services | 2024 |
| ROY Solutions Ltd | Real estate | 2019 |
| Royal Armouries Trading and Enterprises Limited | Wholesale & retail | 2010 |
| Royal Asia (Seafood) Ltd | Wholesale & retail | 2008 |
| Royal Pilgrim Design Limited | Professional & scientific | 2021 |
| Royale DRY Cleaning (Leeds) Ltd | Other services | 2025 |
| Royale Lehope Limited | Real estate | 2020 |
| Royale Prop Ltd | Real estate | 2025 |
| Royale Trading Ltd | Hospitality | 2025 |
| Royale Vintage UK Limited | Wholesale & retail | 2025 |
| Royce Roberts Automotive Limited | Wholesale & retail | 2008 |
| Royd Mews Management Co. Limited | Households | 1987 |
| Roydhouse Properties Limited | Real estate | 2012 |
| Royds Green Farm Management Company Limited | Administrative & support | 2014 |
| Royds Hand Car Wash Ltd | Administrative & support | 2025 |
| Royds Holdings Limited | Professional & scientific | 1988 |
| Royds Property Ltd | Construction | 2020 |
| Royds Property Services Ltd | Administrative & support | 2018 |
| Royle Empire Ltd | Wholesale & retail | 2025 |
| Royston Development Ltd | Construction | 2026 |
| Rozatel Ltd | Information & communication | 2021 |
| Rozenut.Co Ltd | Agriculture & fishing | 2025 |
| Rozis Services Ltd | Transport & logistics | 2026 |
| Rozsahegyi Ltd | Information & communication | 2017 |
| Rozwel Ltd | Wholesale & retail | 2026 |
| RP Bradbury Limited | Administrative & support | 2003 |
| RP NET Media Holdings Ltd | Financial services | 2023 |
| RP NET Media Ltd | Financial services | 2016 |
| RPA Mechanical Services Limited | Construction | 2025 |
| RPB Building Supplies Limited | Wholesale & retail | 2013 |
| RPC Good BOY Limited | Information & communication | 2024 |
| RPD Leeds Ltd | Construction | 2022 |
| RPD Leeds Scaffolding Limited | Construction | 2025 |
| RPD the Arkle Ltd | Construction | 2026 |
| RPG Developments Ltd | Construction | 2024 |
| RPH Technology Limited | Professional & scientific | 2014 |
| Rphc Housing Ltd | Real estate | 2024 |
| RPL Properties Limited | Construction | 2016 |
| RPM Car Sales Limited | Wholesale & retail | 2011 |
| RPM Plant & Contracting Ltd | Administrative & support | 2026 |
| RPM Vehicles Ltd | Wholesale & retail | 2021 |
| RPN Medics Ltd | Health & social care | 2023 |
| RPP Asbestos Services Limited | Professional & scientific | 2008 |
| RPP Construction Services Limited | Professional & scientific | 2009 |
| RPP Limited | Professional & scientific | 2010 |
| RPP Management Limited | Professional & scientific | 1984 |
| RPP Trustees Limited | Professional & scientific | 2023 |
| RPS Motors Ltd | Wholesale & retail | 2017 |
| RPT Property Developments Ltd | Professional & scientific | 2025 |
| RPW Doors Ltd | Manufacturing | 2022 |
| RR Fashion Group Ltd | Wholesale & retail | 2025 |