| Reverend DUB Music Ltd | Information & communication | 2019 |
| Reviform CIC | Health & social care | 2024 |
| Revignite Ltd | Professional & scientific | 2024 |
| Revitalise Skincare Clinic Ltd | Health & social care | 2017 |
| Revival (the Living Room) Community Interest Company | Wholesale & retail | 2008 |
| Revival Sports Cars Limited | Wholesale & retail | 2011 |
| Reynolds Outdoors Ltd | Administrative & support | 2011 |
| RF Auto Repairs Ltd | Wholesale & retail | 2018 |
| RF Data Science Ltd | Other services | 2023 |
| RG Property Solution Trading Limited | Real estate | 2022 |
| RGM Decorating Limited | Construction | 2012 |
| Rgpballs UK Ltd | Manufacturing | 2025 |
| Rgpsa Limited | Real estate | 2024 |
| RGR Garage Ltd | Wholesale & retail | 2016 |
| RGS Electronics Limited | Professional & scientific | 2007 |
| RH Building Limited | Construction | 2024 |
| Rheological Limited | Other services | 1998 |
| Rhino of the North Limited | Information & communication | 2015 |
| Rhythm & Salsa Limited | Arts & recreation | 2024 |
| Rich Smith Research Ltd | Information & communication | 2024 |
| Richard Bradbury Ltd | Information & communication | 2014 |
| Richard Farish Limited | Professional & scientific | 2002 |
| Richard James Property Developments Ltd | Real estate | 2025 |
| Richard Minnis OIL Boiler Specialist Ltd | Construction | 2019 |
| Richmond London Homes Ltd | Real estate | 2017 |
| Rick Young Ltd | Information & communication | 2012 |
| Rickmans Car Valet Limited | Other services | 2025 |
| Ridge Clothing (UK) Ltd | Wholesale & retail | 2017 |
| Ridley Property Partners Ltd | Real estate | 2025 |
| Ridley Ventures Ltd | Manufacturing | 2026 |
| Riental Ltd | Health & social care | 2022 |
| Rigging Team Limited | Professional & scientific | 2010 |
| Right Choice Recruitment Limited | Administrative & support | 2004 |
| Right Track Thinking Ltd | Health & social care | 2017 |
| Rigour Limited | Professional & scientific | 2021 |
| Riley Music Limited | Arts & recreation | 2022 |
| Ripcord Construction Limited | Construction | 2013 |
| Ripon Road Development Ltd | Construction | 2025 |
| Ripple (Inc) Ltd | Administrative & support | 2023 |
| Ritsy Consulting Ltd | Information & communication | 2026 |
| Ritty's Place Ltd | Hospitality | 2019 |
| Riverside Fish & Ship Limited | Professional & scientific | 2002 |
| RJ & RJ Engineering Services Ltd | Construction | 2019 |
| RJ Property Refurbishments Ltd | Construction | 2025 |
| RJ Roofing Cambridge Limited | Construction | 2020 |
| Rjones Clearance Ltd | Water & waste | 2025 |
| RJW Events Limited | Transport & logistics | 2016 |
| RJW Production Hire Ltd | Professional & scientific | 2023 |
| RLB Planning Limited | Manufacturing | 2014 |
| RLK Developments Limited | Construction | 2012 |
| RLR Ventures Ltd | Information & communication | 2026 |
| RM Technical Associates Ltd | Information & communication | 2016 |
| Rm.Montague Ltd | Other services | 2018 |
| RMC Managers Limited | Real estate | 2001 |
| RMG Group Ltd | Construction | 2026 |
| RMH Service Group Ltd | Administrative & support | 2025 |
| RNY Solutions Ltd | Other services | 2019 |
| ROA Christian Prayer Centre Ltd | Other services | 2023 |
| ROA Perfect Cleaning Limited | Administrative & support | 2014 |
| Roam Espresso Ltd | Hospitality | 2023 |
| ROB Purkiss Associates Limited | Professional & scientific | 2012 |
| ROB Richards Consultancy Limited | Professional & scientific | 2009 |
| Robas Trade Ltd | Construction | 2015 |
| Robert Lewis, Redbond, Ruggieri & Co Limited | Professional & scientific | 2014 |
| Robert Roberta Ltd | Wholesale & retail | 2024 |
| Roblyn Murphy Limited | Other services | 2013 |
| Robot Dinosaur Productions Limited | Information & communication | 2018 |
| Robyn Taylor Events Limited | Arts & recreation | 2023 |
| Robyn Taylor Weddings Limited | Arts & recreation | 2023 |
| Rock 13 Tequila Limited | Other services | 2021 |
| Rock Fintek Limited | Other services | 2020 |
| Rock Salt 23 Limited | Hospitality | 2018 |
| Rocket Paye Limited | Administrative & support | 2020 |
| Rocky Goodwine Productions Ltd | Information & communication | 2020 |
| Roda Construction Ltd | Construction | 2021 |
| Rodericks Mortgage Services Ltd | Financial services | 2020 |
| Rodi's Fish and Chips Ltd | Hospitality | 2023 |
| ROE Development Partnership Limited | Real estate | 2016 |
| Roger Gracie Academy West Bristol Limited | Arts & recreation | 2019 |
| Rogers ROW Limited | Real estate | 2022 |
| ROH Services Limited | Construction | 2025 |
| Rokvin Group Ltd | Construction | 2022 |
| Rolematch Ltd | Administrative & support | 2026 |
| Romgas Limited | Construction | 2014 |
| Romva Services Ltd | Construction | 2020 |
| Ronald Mills Limited | Other services | 2019 |
| Rookies Day Nurseries Limited | Health & social care | 1988 |
| Rooks Nest Barns Limited | Households | 2000 |
| Rooks Nest Farm Residents Limited | Households | 2005 |
| Rooks Nest Management Company Limited | Administrative & support | 1992 |
| Roome.Uni Ltd | Information & communication | 2020 |
| Roots by Kelly 0'MEARA Ltd | Health & social care | 2025 |
| Roro Haulage & Skip Hire Ltd | Water & waste | 2019 |
| Rosalie Clayton Casting Limited | Information & communication | 2011 |
| Rosco Services Limited | Professional & scientific | 2011 |
| Rose & Crown Aston Limited | Hospitality | 2019 |
| Rose & Lily Club Ltd | Wholesale & retail | 2022 |
| Rose Homes Ltd | Real estate | 2018 |
| Rose Nails (Stevenage) Limited | Other services | 2026 |
| Rose Walk Management Company Limited | Households | 1995 |