| RFD Advisory Ltd | Administrative & support | 2026 |
| Rfias Limited | Professional & scientific | 2013 |
| RFP 99 Limited | Administrative & support | 2017 |
| RG Consultant Services Ltd | Administrative & support | 2026 |
| RG Vacuum Ltd | Construction | 2026 |
| RGA Projects Ltd | Administrative & support | 2023 |
| RGA Water Solutions Limited | Administrative & support | 2013 |
| RGC Consultancy Limited | Administrative & support | 2015 |
| RGK Consulting Ltd | Professional & scientific | 2023 |
| RGW Solutions Ltd | Professional & scientific | 2018 |
| RGY Consulting Limited | Professional & scientific | 2019 |
| RH International Services Limited | Administrative & support | 2026 |
| RH Property Holding Limited | Real estate | 2021 |
| RH Rieder Limited | Professional & scientific | 2017 |
| Rhill IT Services Limited | Information & communication | 2017 |
| Rhino Cars Ltd | Wholesale & retail | 2019 |
| RHJ Engineering Limited | Administrative & support | 2013 |
| RHO Consultancy Limited | Professional & scientific | 2017 |
| Rhodes Family Consulting Ltd | Professional & scientific | 2026 |
| Rhodia Limited | Manufacturing | 1926 |
| RHS (NW) Property Ltd | Real estate | 2026 |
| RHT Group Limited | Administrative & support | 2015 |
| RHT Limited | Administrative & support | 1998 |
| RHT London Limited | Other services | 2007 |
| RHT Scotland Limited | Manufacturing | 2004 |
| RHT Warrington Limited | Administrative & support | 1995 |
| RI Finance Ltd | Professional & scientific | 2026 |
| RIA Trans Ltd | Transport & logistics | 2026 |
| Rias Building Facilities Limited | Construction | 2017 |
| Ribe Tech Limited | Professional & scientific | 2018 |
| Ribeiro Holdco Limited | Financial services | 2026 |
| Ribot Investments Limited | Real estate | 2006 |
| Richard Harris IT Consulting Limited | Information & communication | 2024 |
| Richard Hawkings Financial Planning Limited | Financial services | 2013 |
| Richbea Consultancy Limited | Professional & scientific | 2017 |
| Richfusion IT Limited | Information & communication | 2012 |
| Richie Consulting Limited | Professional & scientific | 2020 |
| Richmond Geotechnical Services Limited | Administrative & support | 2013 |
| Richmond Logic Limited | Administrative & support | 2014 |
| Rick Brassington Limited | Professional & scientific | 2022 |
| Rickstar Ltd | Information & communication | 2011 |
| Ricky Unarkat Limited | Professional & scientific | 2014 |
| Riddle Jones Associates Limited | Professional & scientific | 2010 |
| Rider Trucking Limited | Administrative & support | 2025 |
| Ridetek Ltd | Manufacturing | 2019 |
| Ridgeback Capital Advisors Ltd | Financial services | 2019 |
| Ridgemount Estates (North West) Limited | Real estate | 2019 |
| Ridhvina Software Solutions Ltd | Information & communication | 2024 |
| Riff Business Accounting and Consultancy Ltd | Financial services | 2018 |
| RIG Rescue 24HR Recovery & Roadside Towing Ltd | Transport & logistics | 2017 |
| RIG Shorts Ltd | Wholesale & retail | 2024 |
| Rigby Lennon & Co Limited | Professional & scientific | 2002 |
| Riggs Cumbria Limited | Health & social care | 2024 |
| Righa Investment Property Group Limited | Real estate | 2025 |
| Righttern Limited | Information & communication | 2026 |
| Riley & Shutt (Tools) Limited | Construction | 1968 |
| Riley Snack Attack Limited | Hospitality | 2003 |
| Ringpay Limited | Financial services | 2025 |
| Rini Consultancy Limited | Information & communication | 2017 |
| Rio's Piri Piri Warrington Ltd | Hospitality | 2021 |
| Rioja Engineering Limited | Professional & scientific | 2012 |
| Riqueza Business Solutions Ltd | Financial services | 2017 |
| Riqueza Holdings Ltd | Financial services | 2017 |
| Rise Control Ltd | Information & communication | 2018 |
| Riseley Construction Ltd | Professional & scientific | 2017 |
| Risktec Solutions Limited | Professional & scientific | 2000 |
| Risley MOT & Truck Limited | Wholesale & retail | 2007 |
| Rissan Services Limited | Education | 2021 |
| Ritchie Consulting (UK) Limited | Professional & scientific | 2007 |
| Ritchie Pharmaceutical Solutions Limited | Manufacturing | 2025 |
| Ritson-Raab Limited | Professional & scientific | 2016 |
| Ritz Bridge Ltd | Real estate | 2024 |
| Ritz Records Ltd | Extraterritorial | 2010 |
| Riva Menswear Ltd | Wholesale & retail | 2007 |
| Rivein UK Limited | Transport & logistics | 2025 |
| Rivendall Services Ltd | Professional & scientific | 2018 |
| River Thames Education Ltd | Education | 2018 |
| River Till Management Ltd | Other services | 2017 |
| Rivera Consultancy Limited | Administrative & support | 2025 |
| Riverside Developments (North West) Limited | Construction | 1992 |
| Riverside Estates (North West) Ltd | Administrative & support | 2011 |
| Riverside Partnership (North West) Limited | Real estate | 2014 |
| Riverside Point Ltd | Real estate | 2023 |
| Riverside Regalia Ltd | Wholesale & retail | 2024 |
| Riverside View Car Sales Limited | Wholesale & retail | 2016 |
| Riversmead Limited | Health & social care | 1996 |
| Rivet Solutions Limited | Wholesale & retail | 2026 |
| Rivierapool Imports UK Ltd | Other services | 2024 |
| Rivington Products Ltd | Wholesale & retail | 2025 |
| Rivols Ltd | Wholesale & retail | 2018 |
| RIX Engineering Ltd | Professional & scientific | 2019 |
| RIX Motor Company Holdings Limited | Financial services | 2024 |
| RIX Motor Company Limited | Wholesale & retail | 1984 |
| Riylan Consulting Limited | Information & communication | 2018 |
| RJ & KJ Properties Ltd | Real estate | 2025 |
| RJ Advisory Services Limited | Professional & scientific | 2021 |
| RJ Electric Solutions Limited | Construction | 2017 |
| RJ Enterprises ST Limited | Wholesale & retail | 2026 |
| RJ Smyth Marketing Ltd | Professional & scientific | 2018 |
| RJ Williams Process Engineering Limited | Administrative & support | 2011 |