| Rivca Limited | Information & communication | 2026 |
| River Properties London Limited | Real estate | 2020 |
| River Stone Consultancy Limited | Extraterritorial | 2024 |
| Riverpath Care Ltd | Health & social care | 2022 |
| Riverside Management Buckinghamshire Ltd | Real estate | 2024 |
| Riversoftware Service Ltd | Information & communication | 2024 |
| Rivestor Ltd | Information & communication | 2025 |
| Rizor Scaffolding Limited | Construction | 2025 |
| Rizz DER Limited | Wholesale & retail | 2026 |
| RJB IT Consulting Limited | Information & communication | 2023 |
| RJP Consultancy Services Limited | Professional & scientific | 2023 |
| RM Buisness Ltd | Wholesale & retail | 2025 |
| RM Medical Aesthetics Ltd | Health & social care | 2026 |
| RM Property Ltd | Real estate | 2024 |
| RN Apparel Ltd | Wholesale & retail | 2025 |
| Road Ready Motors Ltd | Wholesale & retail | 2026 |
| Roadrunnerz Autos Ltd | Wholesale & retail | 2020 |
| Roan Straps Ltd | Manufacturing | 2025 |
| Roar Networks International Ministry Limited | Other services | 2025 |
| Roastedfrog Limited | Real estate | 2015 |
| ROB Hartley Digital Ltd | Professional & scientific | 2025 |
| Robbia Thurton Co., Ltd | Extraterritorial | 2021 |
| Robert a Wilson Limited | Arts & recreation | 2010 |
| Robert Firth Associates Limited | Administrative & support | 2015 |
| Robinson & Partner Properties Ltd | Real estate | 2025 |
| Robledo & Davis LLP | | 2022 |
| Robot Gateway Ltd | Wholesale & retail | 2018 |
| Rocar Holdings Limited | Real estate | 2019 |
| Rocheart Ltd | Wholesale & retail | 2023 |
| Rochelle Tompkins Ltd | Wholesale & retail | 2025 |
| Rock Protein Ltd | Wholesale & retail | 2025 |
| Rock Shield International (RSI Global) Ltd | Professional & scientific | 2020 |
| Rocket & Squash Ltd | Information & communication | 2026 |
| Rocket Web Solutions Limited | Information & communication | 2025 |
| Rockland Trading Ltd | Administrative & support | 2021 |
| Rocoda Digital Ltd | Wholesale & retail | 2025 |
| Rodeo Curated Ltd | Wholesale & retail | 2025 |
| Rodeo Investment Ltd | Professional & scientific | 2025 |
| Rodha Trading Limited | Wholesale & retail | 2019 |
| Rodja LLP | | 2025 |
| Rodo Term Ltd | Energy | 2025 |
| Rodrigues Cleaning Ltd | Administrative & support | 2025 |
| Roewood Properties Limited | Health & social care | 2006 |
| Rofer Limited | Financial services | 2021 |
| Roma House Productions Limited | Arts & recreation | 2024 |
| Romanian Furniture Ltd | Wholesale & retail | 2025 |
| Romans Scaffolding Ltd | Construction | 2020 |
| Romanti (UK) Trading Co., Ltd | Manufacturing | 2025 |
| Rongcheng Co., Ltd | Administrative & support | 2020 |
| Ronudyn Ltd | Professional & scientific | 2025 |
| Roocass Ltd | Extraterritorial | 2024 |
| Roofcoatingspecialists Ltd | Construction | 2013 |
| Roogreen Nominees Limited | Financial services | 2018 |
| Roogreen Ventures LLP | | 2012 |
| Rool Records Ltd | Information & communication | 2022 |
| Room 533 Games Ltd | Wholesale & retail | 2026 |
| Root & Petal Co. Ltd | Manufacturing | 2026 |
| Rooteas Ltd | Wholesale & retail | 2025 |
| Rootify Limited | Information & communication | 2025 |
| Rootin' Tootin' Studio Limited | Professional & scientific | 2024 |
| Roper Group Limited | Financial services | 2026 |
| Rory Burke Ltd | Wholesale & retail | 2026 |
| Rosarex Ltd | Extraterritorial | 2026 |
| Rosath Trading Ltd | Wholesale & retail | 2025 |
| Rosatsch Ltd | Professional & scientific | 2021 |
| Rose Candy Gifts & Co Ltd | Wholesale & retail | 2020 |
| Rose&Pearl Jewellery Ltd | Wholesale & retail | 2025 |
| Rosecrans Versa Ltd | Wholesale & retail | 2025 |
| Roselux Ltd | Wholesale & retail | 2025 |
| Rosiajewelry Ltd | Manufacturing | 2025 |
| Rosies Shots and Champagne Ltd | Other services | 2021 |
| Rosphem Beauty Ltd | Wholesale & retail | 2025 |
| Rossion Ltd | Wholesale & retail | 2025 |
| Rosylemon Limited | Wholesale & retail | 2025 |
| Rosyraen Ltd. | Wholesale & retail | 2025 |
| Rota Umbrella Ltd | Administrative & support | 2019 |
| Rothgate Procurement Advisory Ltd | Professional & scientific | 2026 |
| Roundiverse Ltd | Wholesale & retail | 2025 |
| Rouz Ltd | Administrative & support | 2015 |
| Rowad Academy Ltd | Education | 2025 |
| Rowanfell Outfitters Ltd | Wholesale & retail | 2025 |
| Royale Bantu Holdings Ltd | Administrative & support | 2025 |
| Royee Ltd | Wholesale & retail | 2025 |
| Royest Group Ltd | Wholesale & retail | 2025 |
| Rozbril Ltd | Information & communication | 2025 |
| RP HR Ltd | Administrative & support | 2024 |
| Rpgc Plumbing & Heating Ltd | Construction | 2022 |
| RPM Water Management Limited | Professional & scientific | 2020 |
| RPS Hsfs Ltd | Real estate | 2025 |
| RPS Norwich Ltd | Real estate | 2024 |
| RPS Prop Ltd | Real estate | 2025 |
| RQA Creating Places Ltd | Real estate | 2023 |
| Rqrw Jgihing Trading Limited | Wholesale & retail | 2025 |
| Rr&Gr Real Estates Ltd | Real estate | 2026 |
| Rrdy Ghing Trading Limited | Wholesale & retail | 2025 |
| Rrhq Limited | Arts & recreation | 2026 |
| RRS Trading Ltd | Wholesale & retail | 2026 |
| Rrtv Ltd | Wholesale & retail | 2026 |
| RS Rail Services Ltd | Construction | 2024 |
| RSJ Eco House Limited | Construction | 2023 |