| RAM 1 Prop Limited | Real estate | 2025 |
| RAM Brothers Properties Limited | Real estate | 2023 |
| RAM Brothers Retail Properties Limited | Real estate | 2026 |
| RAM Brothers Retailing Limited | Wholesale & retail | 2024 |
| RAM Engineers Ltd | Professional & scientific | 2007 |
| RAM Financial Options Limited | Professional & scientific | 2012 |
| RAM Fruit and VEG Ltd | Wholesale & retail | 2024 |
| RAM Impex Ltd | Wholesale & retail | 2023 |
| RAM Japesh Enterprise Ltd | Wholesale & retail | 2022 |
| RAM KM Property Limited | Real estate | 2017 |
| RAM Luxe Ltd | Wholesale & retail | 2025 |
| RAM MGT Services Limited | Real estate | 2013 |
| RAM Motors Rayners Lane Limited | Wholesale & retail | 2017 |
| RAM Painting Limited | Construction | 2020 |
| RAM Properti Limited | Real estate | 2021 |
| RAM Property Woodhill Limited | Real estate | 2023 |
| Rama Electrical Limited | Construction | 2016 |
| Rama Residents Limited | Real estate | 1984 |
| Raman Power Technologies Ltd | Information & communication | 2018 |
| Ramaraja Homes Limited | Real estate | 2024 |
| Ramb Ltd | Hospitality | 2019 |
| Rambrother Global Ltd | Real estate | 2025 |
| Ramesh Jewellers Limited | Wholesale & retail | 2010 |
| Ramflo Tour Limited | Transport & logistics | 2022 |
| Rami Healthcare Limited | Health & social care | 2026 |
| Rami Reda Ltd | Wholesale & retail | 2023 |
| Rammos Homes Ltd | Real estate | 2023 |
| Ramo Holdings Ltd | Financial services | 2026 |
| Ramo the Colourist Ltd | Other services | 2025 |
| Rams Const Ltd | Construction | 2015 |
| Rams Pure Vegetarian Limited | Hospitality | 2015 |
| Ramsen Limited | Real estate | 1992 |
| Ramseo Limited | Information & communication | 2023 |
| Ramsi Investments Limited | Real estate | 2019 |
| RAN Logistics Limited | Transport & logistics | 2023 |
| Rana Energy Ltd | Manufacturing | 2023 |
| Rana Group Holdings Limited | Real estate | 2025 |
| Rana International TV Ltd | Information & communication | 2025 |
| Rana Partnership LLP | | 2020 |
| Rana Smiles Ltd | Health & social care | 2025 |
| Randeria & Co Limited | Other services | 2013 |
| Randolph Court Residents Company Limited | Households | 1972 |
| Randolph Wilcox Ltd | Information & communication | 2011 |
| Ranex Building Contractors Ltd. | Construction | 2014 |
| Rang House Ltd | Construction | 2014 |
| Rang International UK Limited | Manufacturing | 2023 |
| Rang Mahal Limited | Hospitality | 2009 |
| Range Mate Ltd | Information & communication | 2024 |
| Range Stone Ltd | Manufacturing | 2024 |
| Rangeela Arts London Ltd | Other services | 2014 |
| Rangehalt Residents Management Limited | Households | 1991 |
| Ranhar Engineering Limited | Construction | 2018 |
| Ranhar Properties Limited | Real estate | 2020 |
| Rani's Beauty Lounge Ltd | Other services | 2020 |
| Rania & Aimun Groups Limited | Administrative & support | 2024 |
| Rania & Aimun Ltd | Administrative & support | 2024 |
| Ranjna Estate Limited | Real estate | 2026 |
| Rank Amateur Limited | Administrative & support | 2011 |
| Rank Enterprises Ltd | Wholesale & retail | 2022 |
| Ranks Enterprises Limited | Wholesale & retail | 1999 |
| Ranks Property Holdings Ltd | Real estate | 2017 |
| Ranza Ltd | Wholesale & retail | 2020 |
| RAO International Trading Co. Limited | Wholesale & retail | 2013 |
| Rapalooza Limited | Arts & recreation | 2010 |
| Rapid DPF Solutions Ltd | Wholesale & retail | 2024 |
| Rapid Finish Ltd | Arts & recreation | 2024 |
| Rapid Sales and Marketing Ltd | Wholesale & retail | 2019 |
| Rapide Reprographics Limited | Manufacturing | 1992 |
| Rapidforce Security Limited | Financial services | 2020 |
| Rapidphysio.Uk Limited | Health & social care | 2018 |
| Rapidspark Clean. Ltd | Administrative & support | 2025 |
| Raptor Capital Limited | Real estate | 2005 |
| Raptor Capital UK Ltd | Administrative & support | 2009 |
| Raptor Training Academy Ltd | Administrative & support | 2025 |
| Rare Sports & Entertainment Ltd | Arts & recreation | 2026 |
| Rares Stoica Ltd | Construction | 2022 |
| Rarle Global UK Ltd | Wholesale & retail | 2025 |
| RAS Business Developments Limited | Other services | 2014 |
| RAS Transformation Limited | Administrative & support | 2026 |
| Rasa Bojun Ltd | Hospitality | 2017 |
| Rasa Property Ltd | Real estate | 2026 |
| Rasan Engneering & Design Limited | Construction | 2013 |
| Rasc Ltd | Information & communication | 2024 |
| Rascals Barbershop London Limited | Other services | 2025 |
| Rascom Ltd | Information & communication | 2025 |
| Rasd for Strategic Studies Limited | Information & communication | 2022 |
| Rasheed Consultancy Ltd | Health & social care | 2019 |
| Rashid Property & Investments Ltd | Real estate | 2025 |
| Rashmeet Ltd | Wholesale & retail | 2015 |
| Rashmni Ltd | Construction | 2025 |
| Raspear Management Limited | Professional & scientific | 2015 |
| Rass Properties Ltd | Real estate | 2020 |
| Rassam Ltd | Real estate | 2010 |
| Rastogi Capital Limited | Real estate | 2019 |
| Rasuka Property LLP | | 2021 |
| Rateuse Limited | Administrative & support | 1997 |
| Rathburn Estates Limited | Real estate | 2013 |
| Rathi & Sons Ltd | Wholesale & retail | 2023 |
| Rathod Enterprises Ltd | Wholesale & retail | 2025 |
| Rathod EYE Care Ltd | Health & social care | 2021 |