| Regent Court Sandiacre Management Company Limited | Real estate | 2006 |
| Rehbar Courier Services Limited | Transport & logistics | 2025 |
| Reid and Carter Properties Ltd | Real estate | 2026 |
| Reid Consultancy (Aviation) Ltd | Public administration | 2021 |
| Rejuvit Ltd | Information & communication | 2025 |
| Renegade Autoworx Ltd | Wholesale & retail | 2014 |
| Renew Education Ltd | Education | 2025 |
| Renewables Inc Limited | Extraterritorial | 2017 |
| Renewed Laser Ltd | Other services | 2016 |
| Renovora Ltd | Construction | 2025 |
| Rent a Property D&B Ltd | Real estate | 2025 |
| Repair IT Specialists Limited | Construction | 2018 |
| Repeat Media Limited | Information & communication | 2025 |
| Reports ETC. Limited | Health & social care | 2024 |
| Resnexus UK Limited | Information & communication | 2026 |
| Resolve IT Recycling Group Ltd | Information & communication | 2016 |
| Resolve IT Services Ltd | Information & communication | 2019 |
| Revington Classics Limited | Wholesale & retail | 2022 |
| Revington TR Limited | Wholesale & retail | 2001 |
| Revise Radiology Ltd | Education | 2014 |
| Revival North Ltd | Real estate | 2016 |
| Revival Traditional Beds Ltd | Wholesale & retail | 2009 |
| Revprop Limited | Administrative & support | 2009 |
| Reynolds & Bauhm Ltd | Manufacturing | 2016 |
| Rhino Fire Control Limited | Public administration | 2019 |
| Rhode Accounting Limited | Administrative & support | 2013 |
| Rhythmical Customer Acquisition Limited | Professional & scientific | 2020 |
| Riatrop Ltd | Transport & logistics | 2025 |
| Richard Ives Ltd | Wholesale & retail | 2026 |
| Richards Barns Management Co Limited | Households | 2004 |
| Riders of Bridgwater Ltd. | Administrative & support | 2000 |
| Riders of Bristol Ltd. | Professional & scientific | 1998 |
| Riders of Cardiff Ltd. | Extraterritorial | 2000 |
| Riders of Exeter Ltd. | Extraterritorial | 2000 |
| Ridgment Holdings Ltd | Financial services | 2026 |
| Ridgment Properties Limited | Real estate | 2026 |
| Ritchie&Co Cleaning Services Ltd | Administrative & support | 2025 |
| Riverside Building Solutions Limited | Construction | 2025 |
| RJ Gray Developments Ltd | Construction | 2022 |
| RJD Bricklaying Limited | Construction | 2015 |
| RK Bell Group (Holdings) Limited | Financial services | 2024 |
| Rlcss Ltd | Wholesale & retail | 2021 |
| RM Services Somerset LLP | | 2026 |
| RMR Rehab Support Workers Ltd | Other services | 2026 |
| RMR Rehabilitation Ltd | Other services | 2023 |
| Roach Couriers Limited | Transport & logistics | 2006 |
| Road Warriors Limited | Transport & logistics | 2024 |
| Roadway Management Co Ltd | Households | 2012 |
| ROB Pugh Management Services Limited | Professional & scientific | 2018 |
| ROB the Boiler MAN Limited | Construction | 2014 |
| Roberts Civils Ltd | Construction | 2024 |
| Roberts Environmental Services Limited | Water & waste | 2019 |
| Roberts Waste Limited | Water & waste | 2017 |
| Rocket Retail Ltd | Wholesale & retail | 2012 |
| Rocketgro Limited | Wholesale & retail | 2021 |
| Rocketman Fireworks Ltd | Wholesale & retail | 2011 |
| Rodney Coate Perimeter Security Adviser Limited | Administrative & support | 2013 |
| Rodway Properties Limited | Real estate | 2021 |
| ROF Barnie-Allen Ltd | Financial services | 2025 |
| Roger Lane Consulting Ltd | Professional & scientific | 2007 |
| Roksicart Limited | Wholesale & retail | 2025 |
| Roman Publications Limited | Wholesale & retail | 2026 |
| ROO Roos Chocolate Ltd | Arts & recreation | 2021 |
| Rooke Socials Ltd | Information & communication | 2026 |
| Rose Tree Windows Ltd | Manufacturing | 2021 |
| Rose-Mae Properties Limited | Real estate | 2015 |
| Roseland Powered Access Ltd | Administrative & support | 2021 |
| Rosemount Front Block Ltd | Real estate | 2012 |
| Rosemount Front Lettings Ltd | Real estate | 2012 |
| Rosemount Front Ltd | Real estate | 2012 |
| Ross Hatch Lettings Limited | Real estate | 2019 |
| Rossiter Wealth Management Ltd | Financial services | 2019 |
| ROTA66 Transport Ltd | Transport & logistics | 2021 |
| Rousells Plumbing and Heating Limited | Construction | 2021 |
| Rowmi Ltd | Wholesale & retail | 2023 |
| RSL Scaffolding Limited | Construction | 2013 |
| Rssst Ltd | Real estate | 2025 |
| RTR Workshops Limited | Wholesale & retail | 2026 |
| Ruben Proactive Care Ltd | Health & social care | 2023 |
| Ruddle Digital Limited | Professional & scientific | 2023 |
| Russell Knight West Country Tools Limited | Wholesale & retail | 2025 |
| Rusty Road to Recovery CIC | Health & social care | 2018 |
| Rutherford Roofing Solutions Ltd | Construction | 2025 |
| S & D Childcare Limited | Health & social care | 2012 |
| S & G Decorators Ltd | Administrative & support | 2017 |
| S & GV Construction Ltd | Construction | 2020 |
| S & K Windows Limited | Construction | 2017 |
| S & T Aviation Ltd | Extraterritorial | 2015 |
| S and D Automotive Limited | Wholesale & retail | 2022 |
| S and D Automotive Property Holdings Limited | Real estate | 2022 |
| S E Cleaning (Southwest) Ltd | Administrative & support | 2020 |
| S G Weighing & Controls Limited | Manufacturing | 2008 |
| S W C Civil Engineering Limited | Real estate | 1980 |
| S W P Concrete Solutions Limited | Manufacturing | 2011 |
| S&Eb Enterprise Limited | Financial services | 2019 |
| S&Kcleaning Ltd | Administrative & support | 2025 |
| S&M Integrated Co, Ltd | Professional & scientific | 2023 |
| S&N at Leather & Lace Ltd | Hospitality | 2025 |
| S. Notaro Group Limited | Construction | 2011 |
| S. Notaro Hotels Limited | Hospitality | 2002 |