| Reno Productions Ltd | Construction | 2024 |
| Renovation Planner Ltd | Construction | 2020 |
| Renoveasy Ltd | Construction | 2026 |
| Renthemelhempstead Limited | Real estate | 2014 |
| Reqspress Ltd | Information & communication | 2015 |
| Rerj Ltd | Health & social care | 2023 |
| RES Collections Ltd | Wholesale & retail | 2025 |
| RES Trading Limited | Other services | 2022 |
| Res-Com Property Management Services Limited | Real estate | 2009 |
| Rescue Arms Care Ltd | Health & social care | 2021 |
| Reslucent Limited | Professional & scientific | 2022 |
| Resolute Electrical Solutions Ltd | Construction | 2022 |
| Resource Interlink Limited | Administrative & support | 2021 |
| Respiratory Diagnostics Ltd | Health & social care | 2024 |
| Response Commercial Finance Ltd | Other services | 2017 |
| Ressa Commercial Limited | Real estate | 2024 |
| Ressa Limited | Real estate | 2020 |
| Restore Service Limited | Information & communication | 2016 |
| Retail Masters Ltd | Administrative & support | 2020 |
| Retail Revival Limited | Professional & scientific | 2009 |
| Rethink AV Limited | Manufacturing | 2022 |
| Rethink Buildings Ltd | Professional & scientific | 2023 |
| Revella Aesthetics Ltd | Other services | 2025 |
| Revo (Retail Evolution) Educational Trust | Education | 2019 |
| Revolution OIL Limited | Administrative & support | 2002 |
| REVOLUTION9 Consulting Ltd | Professional & scientific | 2019 |
| Revx Auto Limited | Wholesale & retail | 2026 |
| Rewopower Ltd | Construction | 2017 |
| Rexcraft Limited | Administrative & support | 2001 |
| Rextonx Ltd | Construction | 2026 |
| Reyit Ltd | Professional & scientific | 2016 |
| Rezno Limited | Information & communication | 2018 |
| RG Cleans Ltd | Administrative & support | 2024 |
| Rgsc Limited | Construction | 2016 |
| Rhodium Consulting Limited | Administrative & support | 2009 |
| RHS Landscaping Ltd | Administrative & support | 2017 |
| Rhythm of Defiance Limited | Wholesale & retail | 2026 |
| Rialto RTM Company Limited | Households | 2021 |
| Richard Bayliss Legal Ltd | Professional & scientific | 2026 |
| Richard Browns (Hairdressers) Limited | Other services | 2005 |
| Richard Collis Ltd | Professional & scientific | 2015 |
| Richard Hogg Limited | Administrative & support | 2007 |
| Richard Ryan Signs Limited | Professional & scientific | 2026 |
| Richfield Park Management Ltd | Households | 2020 |
| Richmond Square Consulting Limited | Administrative & support | 2017 |
| Ricks Development Ltd | Construction | 2025 |
| RID Boat Repairs Ltd | Manufacturing | 2020 |
| Riddimmatik Limited | Information & communication | 2013 |
| Ridgers & Olive Limited | Real estate | 2022 |
| Right Call Resourcing Ltd | Administrative & support | 2008 |
| Right Directions (Management) Limited | Professional & scientific | 2004 |
| Right Option Cleaning Limited | Administrative & support | 2008 |
| Right Way Education Ltd | Administrative & support | 2025 |
| Rigzone Well Services Ltd | Professional & scientific | 2014 |
| Riise Ltd | Construction | 2022 |
| Rijtec Enterprises Limited | Professional & scientific | 2013 |
| Rimac Limited | Manufacturing | 2020 |
| Rimzone Ltd | Wholesale & retail | 2018 |
| Rintam Engineering Limited | Professional & scientific | 2017 |
| Rio's Hemel Ltd | Hospitality | 2026 |
| Rio's Peri Peri Hemel Ltd | Hospitality | 2026 |
| Rioflow Ltd | Information & communication | 2026 |
| Risborough Properties Limited | Real estate | 2017 |
| Rise Rooted Wellness Limited | Other services | 2021 |
| Risk 2 Riches Limited | Financial services | 2026 |
| Risk Ally Limited | Professional & scientific | 2023 |
| Rivacre Village (Ellesmere Port) Management Company Limited | Households | 2005 |
| Rivacre Village (Ellesmere Port) Management Company NO. 2 Limited | Households | 2013 |
| Rivans Electrical Ltd | Construction | 2020 |
| Riven Group Limited | Information & communication | 2023 |
| River Park (Management) Company Limited | Households | 2005 |
| River Taverns Limited | Hospitality | 2011 |
| River Whitewater Management Company (Hook) Limited | Households | 2018 |
| Riverhead Commercial Services Limited | Hospitality | 1996 |
| Rivers House Property Management Company Limited | Real estate | 2015 |
| Riverside Insurance Services Limited | Financial services | 2010 |
| Riverside View (Kendal) Management Company Limited | Households | 2014 |
| Riverview Court (Onega) Management Company Limited | Real estate | 2019 |
| RIW Group Global Limited | Construction | 2020 |
| Riyan Ltd | Real estate | 2020 |
| RJC Film Productions Ltd | Information & communication | 2022 |
| RJM Global Ltd | Professional & scientific | 2025 |
| RJV Holdings Limited | Professional & scientific | 2016 |
| RK Counselling & Psychotherapy Ltd | Health & social care | 2021 |
| RK Deco Ltd | Construction | 2026 |
| RK Distribution Ltd | Wholesale & retail | 2026 |
| RL Security Solutions Ltd | Administrative & support | 2018 |
| Rlijaco Living Ltd | Health & social care | 2025 |
| RM Landscaping Ltd | Administrative & support | 2015 |
| RMB Driving Recruitment Ltd | Administrative & support | 2022 |
| RMB Propaving Solution Limited | Construction | 2025 |
| RMP Property Development Limited | Construction | 2024 |
| RMS Dwellings Limited | Real estate | 2025 |
| RMY Motors Ltd | Wholesale & retail | 2019 |
| RN Fast Constructors Ltd | Construction | 2025 |
| RN International Group Ltd | Wholesale & retail | 2025 |
| RN News Limited | Wholesale & retail | 2020 |
| RN Sure Care UK Ltd | Health & social care | 2025 |
| Roam N Remember Limited | Wholesale & retail | 2026 |
| ROB Isherwood Financial Advice Ltd | Financial services | 2019 |