| RHJ Property Ltd | Real estate | 2019 |
| RHT Surgery Ltd | Health & social care | 2022 |
| RI3K Consulting Limited | Financial services | 2022 |
| Riatsala 68 Limited | Professional & scientific | 2021 |
| Ricall Mobile Ltd | Other services | 2026 |
| Rice Kitchen Ltd | Manufacturing | 2026 |
| Rice Rocket Enterprises Limited | Wholesale & retail | 2020 |
| Richard and Katherine Gilbert Limited | Real estate | 2025 |
| Richard Halling Tech Ltd | Arts & recreation | 2022 |
| Richard-Sloan (NE) Limited | Real estate | 2020 |
| Richardson Access Ltd | Construction | 2025 |
| Richmond Asset Management Ltd | Real estate | 2024 |
| Richmond Contracts Projects Limited | Construction | 2009 |
| Richmond Medical Services Limited | Health & social care | 2004 |
| Richmond Property Services (NE) LLP | | 2012 |
| Richside Homes CIC | Households | 2026 |
| Ricpat Properties Ltd | Real estate | 2010 |
| Ridene Ltd | Transport & logistics | 2024 |
| Riderr Club Ltd | Information & communication | 2019 |
| Ridgetek Web Solutions Ltd | Information & communication | 2021 |
| Ridgeway Store Ltd | Wholesale & retail | 2025 |
| Ridley PC Ltd | Hospitality | 2016 |
| RIE Investments Ltd | Real estate | 2021 |
| RIE Project Management Ltd | Construction | 2013 |
| Riesling Ltd | Real estate | 2020 |
| Riftvault Ltd | Wholesale & retail | 2025 |
| Riggingopsuk Ltd | Construction | 2024 |
| Right Space (UK) Limited | Real estate | 2007 |
| Rigi Estates Ltd | Real estate | 2021 |
| RIHANS1 Ltd | Real estate | 2023 |
| Rima Consultants Limited | Professional & scientific | 2018 |
| RIO Violet Limited | Real estate | 2022 |
| Rippon Financial Management Limited | Professional & scientific | 2008 |
| Risedale Rest Home Limited | Health & social care | 2008 |
| Risenergy Ltd | Professional & scientific | 2024 |
| Rising Estates Ltd | Real estate | 2017 |
| River Leigh Ltd | Real estate | 2015 |
| Rivercore Holding Ltd | Hospitality | 2026 |
| Riverdale Paper PLC | Other services | 1993 |
| Riverdale Security Shredding Limited | Other services | 1998 |
| Riverdale Waste Paper Limited | Professional & scientific | 1999 |
| Rivers Hotel Ltd | Hospitality | 2025 |
| Riverside Capital Holdings Ltd | Real estate | 2025 |
| Riverside Education Services (Gainford) Ltd | Education | 2025 |
| Riverside Hair Ltd | Other services | 2016 |
| Riverside Holdings Group Ltd | Financial services | 2025 |
| Riyos Property Limited | Real estate | 2024 |
| RJ Coaches Limited | Transport & logistics | 2018 |
| RJB Timber Coatings Ltd | Wholesale & retail | 2018 |
| RJE Scaffolding Ltd | Construction | 2026 |
| RJH Mortgage & Financial Services Ltd. | Financial services | 2004 |
| Rjones Property Ltd | Real estate | 2019 |
| RK IT Services Ltd | Information & communication | 2022 |
| RK Systems Ltd | Wholesale & retail | 2012 |
| RKS Medicals Ltd | Health & social care | 2018 |
| RL Caushi Properties Limited | Real estate | 2026 |
| RL Leisure Limited | Other services | 2022 |
| RLC International Limited | Information & communication | 2017 |
| RM Aesthetics Clinic Ltd | Health & social care | 2026 |
| RMC Compliance & Energy Ltd | Professional & scientific | 2026 |
| RMP Consultants Ltd | Professional & scientific | 2018 |
| Rnika Group Ltd | Information & communication | 2025 |
| Roadhogg Auto Repairs Ltd | Wholesale & retail | 2026 |
| Roadside Repairs Rescue Limited | Manufacturing | 2003 |
| Roar Pet Supplies Ltd | Wholesale & retail | 2017 |
| Roar Storage Ltd | Administrative & support | 2024 |
| Robert Bradley Limited | Wholesale & retail | 2023 |
| Robert Tregoning Ltd | Arts & recreation | 2022 |
| Robertson Construction North West Limited | Construction | 2020 |
| Robertson Construction Yorkshire East Midlands Limited | Construction | 2020 |
| Robertson Simpson Group Limited | Professional & scientific | 2013 |
| Robertson Simpson Limited | Professional & scientific | 2002 |
| Robin Watson Sign & Design Limited | Professional & scientific | 2010 |
| Robinson's Shoe Repairs Ltd | Other services | 2019 |
| Robsal (Sunderland) Ltd | Administrative & support | 2025 |
| Robson's Heating and Plumbing Ltd | Construction | 2022 |
| Robsons Heating & Plumbing (NE) Ltd | Construction | 2026 |
| Robus Holdings Ltd | Financial services | 2025 |
| Rocstone Group Limited | Professional & scientific | 2017 |
| Rocstone Lakes Limited | Real estate | 2023 |
| Rod-Ell Property's Ltd | Real estate | 2025 |
| Roden Dream Builders Limited | Construction | 2025 |
| Rodger Signs Ltd | Construction | 2002 |
| Rodum Holdings Ltd | Financial services | 2023 |
| Rogers & Rogers (UK & Eire) Limited | Transport & logistics | 2016 |
| Rom-Vil Ltd | Hospitality | 2018 |
| Roman Smith Property Services Ltd | Real estate | 2021 |
| Romefield Ltd | Real estate | 2023 |
| Roofsm.Art Ltd | Construction | 2025 |
| Rookwood Way Ltd | Real estate | 2022 |
| Rooney Medical Interface Consulting Ltd | Professional & scientific | 2026 |
| Rooneys Scrap Merchants Limited | Water & waste | 2003 |
| Roopa Limited | Wholesale & retail | 2013 |
| Roost Property Investments Ltd | Real estate | 2021 |
| ROOTS2MUSIC Limited | Wholesale & retail | 2002 |
| Rose Lodge Holiday Homes Ltd | Hospitality | 2025 |
| Rose Real Estate Ltd | Real estate | 2023 |
| Rose Tree Holdings Ltd | Real estate | 2016 |
| Rose Uniforms Ltd | Wholesale & retail | 2024 |
| Rosedan Developments Limited | Real estate | 2015 |