| Richard George Holdings Limited | Financial services | 2016 |
| Richard Hawkins Limited | Professional & scientific | 2003 |
| Richard Jackson (Processing) Limited | | 1988 |
| Richard Monk Associates Limited | Administrative & support | 2004 |
| Richard Sewell (Quantity Surveyor) Limited | Professional & scientific | 2019 |
| Richardpodd Ltd | Hospitality | 2019 |
| Richards Fruit & VEG Limited | Wholesale & retail | 2003 |
| Richardson Electrical (EA) Limited | Construction | 2019 |
| Richardson Quantity Surveying Ltd | Professional & scientific | 2025 |
| Riches & Bullard Electrical Ltd | Construction | 2018 |
| Richford Builders Limited | Construction | 2006 |
| Richlink Communications Limited | Information & communication | 1996 |
| Richmond Financial Consultancy Limited | Financial services | 2011 |
| Richmond Management (Ipswich) Limited | Construction | 2016 |
| Richmond Peck Ltd | Professional & scientific | 2022 |
| Richtol Consult Ltd | Health & social care | 2021 |
| Richwise Living Ltd | Wholesale & retail | 2021 |
| Ricto Ltd | Administrative & support | 2015 |
| Riddelsdell Bros Limited | Wholesale & retail | 2003 |
| Rider One Limited | Financial services | 2024 |
| Ridge Technology Co., Ltd | Wholesale & retail | 2026 |
| Ridgeback Estates 101 Ltd | Construction | 2025 |
| Ridgy's Provisions Limited | Manufacturing | 2023 |
| Ridley Recycling Limited | Administrative & support | 2006 |
| Right Energy Ventures Ltd | Professional & scientific | 2018 |
| Right Mindset Ltd | Administrative & support | 2019 |
| Right Move Building Contractors Limited | Construction | 2023 |
| Right River Press Ltd | Manufacturing | 2011 |
| Rightfitcare Ltd | Administrative & support | 2025 |
| Rigworks Tackle Limited | Wholesale & retail | 2026 |
| Riide Dapp Ltd | Transport & logistics | 2023 |
| Rimell Electrical Contractors Limited | Construction | 2009 |
| Rimell Electrical Limited | Construction | 2000 |
| Rimer-Alco Limited | Manufacturing | 2006 |
| Rimu GS Management Ltd | Households | 2025 |
| RIO Properties FT Ltd | Real estate | 2022 |
| Ripan Trans Ltd | Transport & logistics | 2021 |
| Rise Media and Marketing Enterprises Ltd | Information & communication | 2019 |
| Rise Path Assets Ltd | Real estate | 2025 |
| Rise Performance Services Ltd | Arts & recreation | 2025 |
| Risemill Limited | Real estate | 1990 |
| Rising Care Limited | Professional & scientific | 2017 |
| Rising Hope Properties Limited | Real estate | 2024 |
| Riskbridge Associates Ltd | Financial services | 2017 |
| River Chess Enterprises Limited | Information & communication | 2017 |
| River RE Limited | Financial services | 1990 |
| River Reach (Mistley) Management Company Limited | Households | 2018 |
| River Reach Site NO. 2 (Mistley) Management Company Limited | Households | 2022 |
| River Stour Roofing Ltd | Construction | 2020 |
| River View Acquisitions Ltd | Real estate | 2024 |
| Riverdale Estates Limited | Real estate | 1996 |
| Riveron Logistics Ltd | Transport & logistics | 2026 |
| Riverside Garage Ipswich Ltd | Wholesale & retail | 2024 |
| Riviera Partners Investment Ltd | Financial services | 2026 |
| Rivota & Co Ltd. | Wholesale & retail | 2022 |
| Rivulus Ltd | Real estate | 2020 |
| Riyad Properties Ltd | Real estate | 2025 |
| Rizgan Ltd | Hospitality | 2016 |
| Rizwan Store Ltd | Wholesale & retail | 2025 |
| RJ Discounts Ltd | Wholesale & retail | 2025 |
| Rjab Property Services Ltd | Real estate | 2025 |
| RJB Carpentry Ltd | Manufacturing | 2019 |
| RJB Homes Limited | Real estate | 2019 |
| RJB Timber Frame Ltd | Construction | 2018 |
| RJD Freight Ltd | Transport & logistics | 2020 |
| RJE Business Solutions (Ipswich) Ltd | Professional & scientific | 2020 |
| RJE Upstart Ltd | Administrative & support | 2020 |
| RJG Property Investments Limited | Real estate | 2024 |
| RJO Investments Ltd | Real estate | 2025 |
| RJS Properties (Suffolk) Ltd | Real estate | 2011 |
| RKF Property Investments Limited | Real estate | 2024 |
| RL Accountancy Services Ltd | Administrative & support | 2025 |
| RL Business Services Ltd | Administrative & support | 2026 |
| RLH Builders Limited | Construction | 2003 |
| RLJ SPV8 Ltd | Professional & scientific | 2023 |
| RLR Plumbing & Heating Ltd | Construction | 2021 |
| RM Consultancy Ltd | Professional & scientific | 2025 |
| RM IPS Ltd | Real estate | 2025 |
| RM821 Transport Limited | Transport & logistics | 2025 |
| RMB Carpentry & Construction Ltd | Construction | 2025 |
| RMC Garden Machinery Services Ltd | Other services | 2018 |
| RMC Windows Limited | Administrative & support | 2012 |
| RMD Haulage Limited | Transport & logistics | 2018 |
| RMG Consulting Limited | Professional & scientific | 2003 |
| RMP Global Ltd | Other services | 2013 |
| RMS Medica Ltd | Administrative & support | 2025 |
| RMW Transport Limited | Transport & logistics | 2015 |
| RMZ Groceries Ltd | Wholesale & retail | 2025 |
| Rnaa Holdings Ltd | Construction | 2018 |
| Road Way Limited | Construction | 2021 |
| Roadman European Ltd | Transport & logistics | 2023 |
| Roadrunners 24/7 Ltd | Transport & logistics | 2017 |
| Roadtex Logistics Ltd | Transport & logistics | 2022 |
| Roam Consulting Ltd | Financial services | 2017 |
| Roamco Limited | Hospitality | 2016 |
| Roan Networking Limited | Information & communication | 1998 |
| Roar Against Exploitation CIC | Education | 2025 |
| Roast (Holdings) Limited | Financial services | 2011 |
| ROB Black IT Limited | Information & communication | 2022 |
| ROB Cannell Agri Contracts Ltd. | Agriculture & fishing | 2012 |