| Redev Properties Limited | Construction | 2016 |
| Redhill Residences Ltd | Real estate | 2018 |
| Redknight Limited | Construction | 1997 |
| Redmary X Commerce Ltd | Wholesale & retail | 2025 |
| Redpoint Property Group Ltd | Real estate | 2025 |
| Redwood Business Consultants Limited | Professional & scientific | 2016 |
| Reel Key Limited | Real estate | 2025 |
| Reelsharp Services Ltd | Manufacturing | 2017 |
| Reengage Northwest Ltd | Education | 2019 |
| Reevear Limited | Wholesale & retail | 2024 |
| Refractal Limited | Real estate | 2016 |
| Refresh Oven Cleaning Franchise Ltd | Administrative & support | 2018 |
| Refrigerant Technologies Limited | Manufacturing | 2012 |
| Refurbished Stock UK Ltd | Wholesale & retail | 2024 |
| Regal Legal Solutions Ltd | Professional & scientific | 2018 |
| Regal Smiles Ltd | Health & social care | 2025 |
| Regeneration 2 Limited | Construction | 2013 |
| Regulated Business Group Limited | Public administration | 2016 |
| Rejuvehair by Jessica Limited | Other services | 2024 |
| Rejuvia Limited | Wholesale & retail | 2023 |
| Relentless Agency Limited | Professional & scientific | 2023 |
| Reliant Ceiling Supplies Limited | Wholesale & retail | 2021 |
| Reliant Ceilings & Partitions Limited | Construction | 2014 |
| Reliant Holdings Limited | Financial services | 2015 |
| Reliant Interiors Limited | Construction | 2026 |
| Reliant Plastering Limited | Construction | 2021 |
| Reltek Consulting Ltd | Wholesale & retail | 2025 |
| Reluxury Finds Ltd | Wholesale & retail | 2025 |
| Remstone Holdings Limited | Real estate | 2008 |
| Remstone Property Management Ltd | Households | 2014 |
| Render Nation Limited | Information & communication | 2005 |
| Reneebeauty Ltd | Other services | 2024 |
| Renew Home Wrapping Ltd | Construction | 2021 |
| Renovate Smart Limited | Construction | 2022 |
| Renovi Ltd | Real estate | 2025 |
| Rent Smart (UK) Limited | Real estate | 2006 |
| Repairascreen Limited | Wholesale & retail | 2013 |
| Replace IT UK Limited | Wholesale & retail | 2026 |
| Replenish Earth Limited | Hospitality | 2016 |
| Residents of 23 Irlam Road Ltd | Households | 2024 |
| Response Times Limited | Information & communication | 2015 |
| RET Collections Limited | Wholesale & retail | 2015 |
| RETALI8 Ltd | Hospitality | 2023 |
| Rethinking Plastics Ltd | Wholesale & retail | 2019 |
| Retirement Management Limited | Households | 1991 |
| Retrofit Talent Limited | Administrative & support | 2026 |
| Revenue Club Limited | Professional & scientific | 2017 |
| Revil Ltd | Wholesale & retail | 2021 |
| Revision Management Systems Ltd. | Information & communication | 2016 |
| Revitalize Excellence Ltd | Wholesale & retail | 2024 |
| Revive Hair Salons Limited | Other services | 2017 |
| Revive Water Ltd | Wholesale & retail | 2023 |
| Revo One Properties Ltd | Real estate | 2023 |
| Reydar Sports Ltd | Wholesale & retail | 2026 |
| RF3WORLD UK Ltd | Wholesale & retail | 2019 |
| RGC Golf Coaching Limited | Education | 2026 |
| RH Products North West Limited | Wholesale & retail | 2025 |
| Rheducate Ltd | Professional & scientific | 2024 |
| RHJ Stays Ltd | Real estate | 2022 |
| Rhythm and Rhyme Limited | Arts & recreation | 2002 |
| Rhythm Management Solutions Ltd | Professional & scientific | 2020 |
| Ribeye Steakhouse (Birmingham) Limited | Hospitality | 2022 |
| Ribeye Steakhouse (Bradford) Ltd | Hospitality | 2017 |
| Ribeye Steakhouse (Manchester) Ltd | Hospitality | 2017 |
| Rich Media MCR Limited | Professional & scientific | 2010 |
| Richard Shaw Paving Limited | Administrative & support | 2009 |
| Richardson Molloy Electrical Contractors Limited | Construction | 2025 |
| Richi Goal Limited | Real estate | 2022 |
| Riddimstream Limited | Information & communication | 2013 |
| Ridgeway Nurseries Limited | Wholesale & retail | 2002 |
| Right Insure Limited | Financial services | 2017 |
| Right Place Tech Ltd | Administrative & support | 2024 |
| Rightsize Consultancy Ltd | Professional & scientific | 2018 |
| Rinita Consultancy Ltd | Information & communication | 2024 |
| Rise & Shine (VR) Limited | Real estate | 2021 |
| Risk Source Ltd | Professional & scientific | 2008 |
| Riteway Developments Ltd | Construction | 2024 |
| Riteway Holdings Ltd | Real estate | 2024 |
| Riteway Plumbing & Heating Ltd | Construction | 2024 |
| Riti Healthcare Ltd | Health & social care | 2022 |
| Ritz (London) LP | | 2012 |
| Ritz Property Brazil LP | | 2010 |
| Rivith Ltd | Real estate | 2026 |
| Rivjov Ltd | Real estate | 2026 |
| RJ & T Limited | Wholesale & retail | 2020 |
| RJB Property Holdings Ltd | Real estate | 2018 |
| RJT Commercial Services Limited | Professional & scientific | 2017 |
| RJW Living Ltd | Real estate | 2019 |
| RLE Medina Care Limited | Health & social care | 2014 |
| RLT Consulting (UK) Limited | Professional & scientific | 2020 |
| RM2W Asset Managment Ltd | Professional & scientific | 2025 |
| RME Financial Services Limited | Financial services | 2016 |
| Rmpj Limited | Real estate | 2016 |
| RMW5 Ltd | Health & social care | 2024 |
| Roadsafe Traffic Management Limited | Construction | 2019 |
| Robert Keyte Silks Limited | Manufacturing | 1998 |
| Robert Macgillivray Panel Products Limited | Manufacturing | 1980 |
| Robert Palmer Ltd. | Health & social care | 2016 |
| Roberts Homes Cheshire Ltd | Construction | 2011 |
| Robin Welford and Associates Limited | Education | 2002 |