| Quantex Consultants Limited | Professional & scientific | 2023 |
| Quarmby and Quarmby Limited | Health & social care | 2017 |
| Queens Road Dental and Emergency Clinic Ltd | Health & social care | 2021 |
| Quick Guides Limited | Education | 1996 |
| Quick Stop Whitby Road Ltd | Wholesale & retail | 2026 |
| Quicks Service Centre Limited | Wholesale & retail | 2004 |
| Quickstitch at Cheshire Oaks Limited | Other services | 2021 |
| Quinweb Limited | Real estate | 2013 |
| Quorum Properties Limited | Construction | 1972 |
| R Bansal Dental Ltd | Health & social care | 2024 |
| R Beresford Limited | Wholesale & retail | 2003 |
| R Dodds Props Ltd | Information & communication | 2022 |
| R Miah Ltd | Real estate | 2021 |
| R T Retail & Wholesale E.P Limited | Wholesale & retail | 2013 |
| R.A.B Dent Limited | Health & social care | 2022 |
| R.A.M. Aesthetics Limited | Administrative & support | 2018 |
| R7 Property Ltd | Real estate | 2016 |
| Raaan Limited | Real estate | 2023 |
| Raby Road Dental Centre Ltd | Health & social care | 2025 |
| Raby Road Holdings Ltd | Health & social care | 2025 |
| Rachael Byrne Hairdressing Ltd | Other services | 2017 |
| Rachel Ferguson Holdings Ltd | Professional & scientific | 2025 |
| Racing News Media Ltd | Information & communication | 2023 |
| Radbear Productions Ltd | Information & communication | 2025 |
| Radiant Window Cleaning Limited | Administrative & support | 2025 |
| Raid ALI Ltd | Health & social care | 2025 |
| Rainbow Balloons and Gifts Limited | Wholesale & retail | 2021 |
| Raine Capital Ltd | Financial services | 2023 |
| RAJ Shah and Associates Ltd | Health & social care | 2024 |
| RAM (102) Limited | Manufacturing | 2004 |
| Ramada Dental Ltd | Health & social care | 2023 |
| Range Architects Ltd | Professional & scientific | 2024 |
| Rangerb Enterprises Ltd | Real estate | 2018 |
| Rappel Limited | Construction | 2015 |
| Rares Florea Ltd | Transport & logistics | 2018 |
| Rathbone Homes Limited | Construction | 2017 |
| Ratsey Dental Services and Training Limited | Health & social care | 2023 |
| Ravenswood Accountants Ltd | Professional & scientific | 2020 |
| RAW DNA Ltd | Real estate | 2011 |
| RAW Electrical and Security Services Ltd | Construction | 2012 |
| RAW Property Developments Limited | Construction | 2021 |
| Rawa KR Ltd Ltd | Wholesale & retail | 2026 |
| Rawell Group Holdings Limited | Professional & scientific | 1993 |
| Rawlings Safety and Training Consultancy Services Ltd | Professional & scientific | 2011 |
| Rccg Calvary Love City | Other services | 2025 |
| RCS CDM Support Limited | Professional & scientific | 2015 |
| RCS Safety Retainer Services Ltd | Professional & scientific | 2015 |
| RD Consult Ltd | Information & communication | 2023 |
| RD Empire Ltd | Financial services | 2022 |
| RD Interpretations Limited | Professional & scientific | 2026 |
| RD Smiles Limited | Health & social care | 2022 |
| Rdcg Ltd | Real estate | 2021 |
| Reachwcs Limited | Administrative & support | 2023 |
| Readytogo Ltd | Extraterritorial | 2023 |
| Real & Solid Ltd | Manufacturing | 2023 |
| Real Asset Inspection and Material Services Ltd | Other services | 2011 |
| REB Roofing & Cladding Ltd | Construction | 2026 |
| Rebelle Road Properties Ltd | Construction | 2025 |
| Reclaimed Plastic Polymers Ltd | Administrative & support | 2016 |
| Red Circle Joinery & Building Limited | Construction | 2006 |
| Red Garage Express Ltd | Wholesale & retail | 2023 |
| Red Lion Car Sales Ltd | Wholesale & retail | 2015 |
| Red One Turkish Barber Ltd | Other services | 2026 |
| Red Ribbon Equestrian Ltd | Wholesale & retail | 2025 |
| Red Rock Holdings Limited | Administrative & support | 2006 |
| Redbourne Properties Ltd | Real estate | 2025 |
| Redcoach Ltd | Wholesale & retail | 2020 |
| Redimere Limited | Health & social care | 2024 |
| Redkell Limited | Health & social care | 2026 |
| Redline.Bike Ltd | Wholesale & retail | 2024 |
| Rednoise Digital Limited | Information & communication | 2021 |
| Reed & O'Hara Dental Limited | Health & social care | 2025 |
| Refovi Limited | Health & social care | 2024 |
| Regal MGT Ltd | Wholesale & retail | 2020 |
| Rehb Limited | Health & social care | 2011 |
| Reliance Bathrooms Limited | Construction | 2020 |
| Rely on Flooring Ltd | Wholesale & retail | 2018 |
| Renbridge Associates Ltd | Health & social care | 2010 |
| Renbridge Care Services Ltd | Health & social care | 2022 |
| Renbridge Holdings Ltd | Financial services | 2022 |
| Renbridge Properties Ltd | Real estate | 2025 |
| Renbridge Services Ltd | Public administration | 2025 |
| Renderco Ltd | Manufacturing | 2021 |
| Renove Limited | Wholesale & retail | 2005 |
| Rentopoly Ltd | Real estate | 2026 |
| Rentright Vehicle Hire Limited | Wholesale & retail | 2016 |
| Resection Site Engineering Services Limited | Professional & scientific | 2019 |
| Reselling Suppliers Ltd | Information & communication | 2025 |
| Restore 32 Ltd | Health & social care | 2015 |
| Restore Dental Group Limited | Health & social care | 2026 |
| Rethink Corporation Limited | Professional & scientific | 2017 |
| Revibe Homes Limited | Real estate | 2024 |
| Revival Access Limited | Administrative & support | 2026 |
| Revival Property Maintenance Ltd | Construction | 2025 |
| Revival Spraying Specialist Limited | Construction | 2023 |
| Rexd Corporation Limited | Health & social care | 2009 |
| RFD Beaufort Limited | Manufacturing | 2003 |
| RGJ Legal Services Limited | Professional & scientific | 2012 |
| Rhartley Consultancy Ltd | Professional & scientific | 2025 |
| RHF Commercials Limited | Arts & recreation | 2023 |