| Rhino Gym Wear Ltd | Wholesale & retail | 2025 |
| RHM Star Ltd | Wholesale & retail | 2022 |
| Rhoda Wilson Productions Limited | Arts & recreation | 2013 |
| Rhodium Capital Investments 2 Limited | Other services | 2021 |
| Rhodium Capital Investments Ltd | Real estate | 2014 |
| Rhombus Contractors Ltd | Construction | 2025 |
| Rhoop Limited | Professional & scientific | 2013 |
| Rhovas Limited | Health & social care | 2022 |
| RHS Care Services Ltd | Health & social care | 2025 |
| RHS Property Ltd | Real estate | 2021 |
| RHS Short Stays Limited | Hospitality | 2025 |
| Rhythmic Care UK Ltd | Health & social care | 2013 |
| Rhèin Group Ltd | Manufacturing | 2025 |
| RI Auto Cars Ltd | Wholesale & retail | 2021 |
| RI Auto Ltd | Wholesale & retail | 2016 |
| RI Derin Ltd | Wholesale & retail | 2013 |
| Ri'Shonbachira Consultants Ltd | Health & social care | 2024 |
| Ria's Rental Ltd | Real estate | 2024 |
| Riad Global Investors Ltd | Real estate | 2024 |
| Riaz Housing Limited | Real estate | 2025 |
| Riazhar Limited | Construction | 2025 |
| Riba Craig Consultancy Ltd | Professional & scientific | 2014 |
| Riccardo Services Ltd | Real estate | 2025 |
| Rich & Ruitz Perfume Industry Ltd | Wholesale & retail | 2019 |
| Richard Britton Consulting Ltd | Professional & scientific | 2021 |
| Richard Property Service Ltd | Real estate | 2018 |
| Riches Ilford Ltd | Real estate | 2014 |
| Richlove Consultancy Services Limited | Professional & scientific | 2025 |
| Richmer Freeland Limited | Information & communication | 2023 |
| Richmond Grocers Limited | Wholesale & retail | 2011 |
| Richmond Gtfo Ltd | Information & communication | 2026 |
| Richmond Laundries Limited | Administrative & support | 2008 |
| Richmond Recruitment Agency Ltd | Administrative & support | 2021 |
| Richnev Builders Ltd | Construction | 2022 |
| Richrare Ltd | Wholesale & retail | 2026 |
| Richy (UK) Ltd | Administrative & support | 2016 |
| Rick Roberts Ltd | Other services | 2023 |
| Rickie Group Limited | Wholesale & retail | 2025 |
| Ricky Ghataura Coaching Limited | Health & social care | 2022 |
| Ricordo Ltd | Wholesale & retail | 2017 |
| Rida London Limited | Wholesale & retail | 2017 |
| Rida Property Services Limited | Real estate | 2014 |
| Ridax Solutions Limited | Professional & scientific | 2025 |
| Riddhi Beauty & Hair Ltd | Other services | 2025 |
| Ride Guide Limited | Transport & logistics | 2019 |
| Ride on Scooters Ltd | Administrative & support | 2025 |
| Ride the Sheesha Ltd | Wholesale & retail | 2024 |
| Ridepro International Ltd | Transport & logistics | 2023 |
| Riders Trend Ltd | Wholesale & retail | 2011 |
| Ridge Partner Solutions Ltd | Administrative & support | 2026 |
| Ridgemount Limited | Real estate | 2014 |
| Ridgewey Ltd | Wholesale & retail | 2022 |
| Ridhira Enterprises Limited | Wholesale & retail | 2025 |
| RIE3 Limited | Real estate | 2022 |
| RIF Prestige Car Limited | Wholesale & retail | 2019 |
| Riffys Limited | Hospitality | 2026 |
| Rift N Zenith Ltd | Wholesale & retail | 2024 |
| Right Care Group Ltd | Health & social care | 2025 |
| Right Choice Glazing T/A Right Choice Glazing Ltd | Construction | 2015 |
| Right Choice IT Services Limited | Information & communication | 2011 |
| Right Domestic Services Limited | Construction | 2019 |
| Right Plan Limited | Professional & scientific | 2015 |
| Right Premier Solutions Ltd | Information & communication | 2014 |
| Right Property Services Ltd | Real estate | 2023 |
| Right Rents Properties Ltd | Construction | 2023 |
| Right Security Solutions Ltd | Administrative & support | 2017 |
| Right Tax Limited | Professional & scientific | 2014 |
| Right Yield Limited | Construction | 2020 |
| Rightbridge Ltd | Real estate | 2025 |
| Righteous ROW Records Ltd | Wholesale & retail | 2021 |
| Righthere Ltd | Real estate | 2018 |
| Rightinvest Ltd | Real estate | 2014 |
| Rightway Building Ltd | Construction | 2023 |
| Rigid Properties Ltd | Real estate | 2021 |
| Rigley Estates Limited | Real estate | 2016 |
| Rigwig Auto Parts Ltd | Wholesale & retail | 2025 |
| Rigwig Electronic Trading Ltd | Other services | 2020 |
| Rigwig Trading Limited | Wholesale & retail | 2020 |
| Rijah Limited | Wholesale & retail | 2014 |
| Rika Construction Ltd | Construction | 2019 |
| Rila Trade Limited | Construction | 2022 |
| Riley-Hunte's Psychological Consultancy Ltd | Professional & scientific | 2011 |
| RIM Consult Project Ltd | Construction | 2021 |
| RIM Flooring Solutions Ltd | Construction | 2017 |
| Riman Services Ltd | Construction | 2026 |
| Rimco Ltd | Real estate | 2022 |
| Rimon Helps With Co Ltd | Health & social care | 2024 |
| Ringostand Ltd | Wholesale & retail | 2025 |
| Ringshield Limited | Real estate | 1999 |
| Rino Services Limited | Financial services | 2025 |
| Rinz Security Ltd | Administrative & support | 2020 |
| Riona Health Limited | Professional & scientific | 2026 |
| Ripley Lane Limited | Information & communication | 2023 |
| Ripline Construction Ltd | Construction | 2019 |
| Ripped Gym Limited | Arts & recreation | 2007 |
| Rippolson Ceres Limited | Other services | 2023 |
| Riron Technologies Limited | Information & communication | 2023 |
| Rise & Shine Builders Ltd | Construction | 2025 |
| Rise Estates Chelmsford Ltd | Real estate | 2020 |
| Rise Group London Limited | Administrative & support | 2019 |