| RGJ Autos Limited | Manufacturing | 2019 |
| RGM Outdoors Ltd | Agriculture & fishing | 2018 |
| RH & RE Skinner Ltd | Manufacturing | 2010 |
| RH Removals Ltd | Transport & logistics | 2018 |
| RHC Engineering Consultancy Ltd | Professional & scientific | 2026 |
| Rhema Techlogic Limited | Information & communication | 2006 |
| Rhian Young Permanent Makeup and Beauty Ltd | Other services | 2022 |
| RHP 2025 Limited | Wholesale & retail | 2025 |
| Rhpp Ltd | Administrative & support | 2015 |
| Rhubarb and Yowler Limited | Professional & scientific | 2025 |
| Rhyl Flats Wind Farm Limited | Energy | 2005 |
| RIA Admin Services Ltd | Real estate | 2025 |
| Rialtas Business Solutions Limited | Information & communication | 2007 |
| Rianco Investments LLP | | 2022 |
| Ribchic Piranha Ltd | Hospitality | 2018 |
| RIC & Shiv Fitness Ltd | Education | 2025 |
| RIC- Solutions Ltd | Wholesale & retail | 2025 |
| Rice N Spice 2023 Ltd | Hospitality | 2023 |
| Rich Cleaning Solutions Ltd | Administrative & support | 2024 |
| Richalis Limited | Information & communication | 1987 |
| Richard Bishop Painting & Decorating Ltd | Construction | 2018 |
| Richard J Huntley Limited | Other services | 2015 |
| Richard James (East Swindon) Limited | Real estate | 2014 |
| Richard James (Highworth) Ltd | Real estate | 2013 |
| Richard James (North Swindon) Limited | Real estate | 2021 |
| Richard James (Old Town) Limited | Real estate | 2012 |
| Richard James (RWB) Limited | Real estate | 2015 |
| Richard James Estate Agents (Wroughton) Limited | Real estate | 2013 |
| Richard James Property Group Limited | Real estate | 2011 |
| Richard James Strategic Holdings Limited | Financial services | 2026 |
| Richard Jefferies Museum Trust | Arts & recreation | 2011 |
| Richard Little Building Contractor Limited | Construction | 2013 |
| Richeath Limited | Extraterritorial | 2003 |
| Richgyamfi Limited | Health & social care | 2018 |
| Richman's Removals (Swindon) Limited | Transport & logistics | 1976 |
| Richmond Dakin Limited | Professional & scientific | 2022 |
| Rickyard Cottages (Broad Hinton) Management Company Limited | Households | 1989 |
| Riddhi Properties Ltd | Real estate | 2026 |
| Riddhitata Technologies Ltd | Information & communication | 2026 |
| Ride on Motorcycles (Wiltshire) Limited | Wholesale & retail | 2023 |
| Riderford Limited | Professional & scientific | 1997 |
| Ridge Investments Limited | Real estate | 2021 |
| Ridge Properties SN5 Ltd | Real estate | 2016 |
| Ridgeon Electrical Services Ltd | Construction | 2026 |
| Ridgeway 4X4 Limited | Wholesale & retail | 2016 |
| Ridgeway Antiques Limited | Wholesale & retail | 2022 |
| Ridgeway Business Services Swindon Limited | Professional & scientific | 2006 |
| Ridgeway Court Limited | Construction | 2024 |
| Ridgeway Heating Limited | Professional & scientific | 2026 |
| Ridgeway PM Ltd | Construction | 2024 |
| Ridgeway Racing Engines Ltd | Manufacturing | 2012 |
| Ridgeway Stoves Ltd | Wholesale & retail | 2011 |
| Ridgway 6 Ltd | Real estate | 2018 |
| Riding in Action (Swindon) Ltd | Education | 2019 |
| Ridion Consulting Limited | Information & communication | 2022 |
| Rigby Morrison FM Ltd | Information & communication | 2018 |
| Right Fit Properties (UK) Limited | Real estate | 2017 |
| Right on Time Courier Limited | Transport & logistics | 2019 |
| Right Rental Letting Agents Ltd | Real estate | 2014 |
| Rightman Group Ltd | Professional & scientific | 2024 |
| Rightpath Investments Limited | Real estate | 2015 |
| Rigowin Ltd | Information & communication | 2017 |
| Rimmer Property Services Ltd | Real estate | 2025 |
| Ringfind Limited | | 1988 |
| Ringopella Limited | Transport & logistics | 2024 |
| Rise Point Tech. Limited | Professional & scientific | 2026 |
| Riseforge Limited | Professional & scientific | 2025 |
| Rising Sun Commercial Ltd | Real estate | 2025 |
| Riteeraj Properties Limited | Real estate | 2024 |
| Ritzy Commercial Limited | Real estate | 2019 |
| Ritzy Engineering Limited | Construction | 2021 |
| Ritzy Space Limited | Real estate | 2018 |
| River ASH Place Management Limited | Households | 2010 |
| Riverbricks Ltd | Wholesale & retail | 2021 |
| Riverdata Limited | Information & communication | 2025 |
| Riverleads Ltd | Health & social care | 2015 |
| Rivernest Limited | Hospitality | 2019 |
| Riverstone Yoga Limited | Arts & recreation | 2024 |
| Riverwise Estate Planning Ltd | Financial services | 2026 |
| Riverwise Financial Planning Ltd | Financial services | 2025 |
| RIXON95 Ltd | Administrative & support | 2018 |
| Riyaz Boxing Ltd | Education | 2026 |
| RJ Construction Group Ltd | Manufacturing | 2026 |
| RJ Dynamics Ltd | Professional & scientific | 2016 |
| RJ Financial Services Limited | Financial services | 2011 |
| RJ Flooring Edinburgh Ltd | Construction | 2023 |
| RJ Lettings & Property Management Limited | Real estate | 2021 |
| RJ Magpie Ltd. | Wholesale & retail | 2012 |
| RJ Property Group Holdings Limited | Financial services | 2021 |
| RJB 75 Limited | Financial services | 2021 |
| RJK Contractors Limited | Construction | 2004 |
| Rjmccartney Ltd | Professional & scientific | 2012 |
| RJO Construction & Plant Hire Ltd | Construction | 2014 |
| Rjrs Consulting Ltd | Financial services | 2024 |
| RKA Consultancy Limited | Information & communication | 2022 |
| Rka-Uk Limited | Real estate | 2022 |
| RKB Coaching Consultancy Limited | Professional & scientific | 2013 |
| RKM Enterprise Limited | Wholesale & retail | 2008 |
| RKM Stores Limited | Wholesale & retail | 2024 |
| RKM Trading (UK) Limited | Wholesale & retail | 2012 |