| Quality Professional Services Ltd | Construction | 2021 |
| Quality Stuff Limited | Transport & logistics | 2014 |
| Qualstar Limited | Manufacturing | 2018 |
| Quantara Consulting Ltd | Professional & scientific | 2026 |
| Quantock Marketing Ltd | Wholesale & retail | 2020 |
| Quantum Auto Pro Ltd | Other services | 2024 |
| Quarry Interiors Limited | Manufacturing | 2017 |
| Quarter & Forge Ltd | Professional & scientific | 2021 |
| QUARTER1 Limited | Information & communication | 2015 |
| Quartzcoil Ltd | Extraterritorial | 2003 |
| Quartzelec Ltd | Manufacturing | 1989 |
| Quartzelec Pension Trustees Limited | Financial services | 2004 |
| Quartzinvest Limited | Financial services | 2006 |
| Quartzinvest Properties Ltd | Real estate | 2011 |
| Quartzteam Ltd | Extraterritorial | 1981 |
| Quattro Resourcing Limited | Administrative & support | 2023 |
| Quattro Trasporti Ltd | Transport & logistics | 2019 |
| Quercia Limited | Water & waste | 1973 |
| Quickdirectsolutions Ltd | Wholesale & retail | 2014 |
| Quickstart Direct (UK) Limited | Wholesale & retail | 2009 |
| Quickstock-Gb Limited | Information & communication | 2025 |
| Quimera Technology Limited | Information & communication | 2008 |
| Quimira Investments Ltd | Financial services | 2026 |
| Quinn Tools and Fasteners Limited | Wholesale & retail | 1981 |
| Quirke Couriers Limited | Administrative & support | 2010 |
| Quirky Crafts Ltd | Wholesale & retail | 2022 |
| Quoole Ltd | Information & communication | 2017 |
| R & B Healthcare Limited | Health & social care | 2019 |
| R & C Builders (Warwickshire) Limited | Construction | 2015 |
| R & R Medics Ltd | Health & social care | 2017 |
| R & S Young Organ Builders Limited | Manufacturing | 2015 |
| R F K (Contracts) Ltd | Wholesale & retail | 2008 |
| R F K (Warwick) Ltd | Wholesale & retail | 2008 |
| R F Tools Limited | Manufacturing | 2002 |
| R Gercs Plumbing & Heating Limited | Construction | 2019 |
| R J (Rugby) Limited | Real estate | 2022 |
| R M Concrete Consultancy Limited | Construction | 2016 |
| R P Berry Ltd | Professional & scientific | 2018 |
| R S Holdings(Uk ) Ltd | Real estate | 2026 |
| R S Properties Rugby Ltd | Real estate | 2021 |
| R S Window Cleaning Services Ltd | Wholesale & retail | 2008 |
| R Singh Transport Ltd | Transport & logistics | 2014 |
| R T Design Innovations Ltd | Professional & scientific | 1998 |
| R V Financial Ltd | Professional & scientific | 2019 |
| R Ward Carpentry Ltd | Construction | 2026 |
| R&M Supply Chain Consultancy Ltd | Wholesale & retail | 2015 |
| R&R Pantry Ltd | Wholesale & retail | 2025 |
| R&W Construction Rugby Ltd | Construction | 2023 |
| R. Bullivant Consulting Limited | Information & communication | 2024 |
| R. W. Ford Limited | Agriculture & fishing | 1963 |
| R.A.C.Parts Ltd | Manufacturing | 2015 |
| R.M.B. (Rugby) Limited | Construction | 1980 |
| R.M.B. Sports Limited | Financial services | 2023 |
| R.P. Miller Associates LLP | | 2008 |
| R.P. Woodford Limited | Agriculture & fishing | 1958 |
| R.S. Prime Builders Limited | Construction | 2023 |
| R.S.A. Group Limited | Extraterritorial | 1976 |
| R.Sandor Ltd | Wholesale & retail | 2020 |
| Raaj Hospitality Ltd | Hospitality | 2019 |
| Race Spec Cages Ltd | Manufacturing | 2014 |
| Rachael Evelyn Ltd | Arts & recreation | 2017 |
| Radford Newsagencies (Coventry) Limited | Real estate | 1947 |
| Radhakrishna Healthcare Solutions Limited | Health & social care | 2026 |
| Rado UK Driver Limited | Transport & logistics | 2013 |
| Radspring Services Limited | Professional & scientific | 1989 |
| RAF Automotive Ltd | Transport & logistics | 2014 |
| Raf-Cap Property Limited | Hospitality | 2025 |
| Raga & Rhythm Dance Academy Limited | Arts & recreation | 2024 |
| RAI Aman Limited | Hospitality | 2024 |
| Raikma Limited | Construction | 2015 |
| Railway Terrace Beds Ltd | Wholesale & retail | 2022 |
| Rainbow Weaving Limited | Extraterritorial | 2003 |
| Rainford Hall Estate Limited | Construction | 1991 |
| Rainhill Investment Limited | Financial services | 2016 |
| Raining Cats and Dogs Kennels and Cattery Ltd | Other services | 2021 |
| Rainlight Investments Limited | Manufacturing | 2010 |
| Rainsbrook Ltd | Real estate | 2024 |
| Raiven Limited | Information & communication | 2022 |
| Ralliam Coaching Ltd | Professional & scientific | 2022 |
| Ralliam Hitz Ltd | Arts & recreation | 2025 |
| Ralliam Holdings Ltd | Financial services | 2020 |
| Rallliam Karting Ltd | Professional & scientific | 2026 |
| Ramah Ravi Properties Limited | Real estate | 2025 |
| Ramanaa Trading Ltd | Wholesale & retail | 2018 |
| Ramss Ltd | Health & social care | 2019 |
| Ramsy Homes Ltd | Real estate | 2024 |
| Ramzenterpise Ltd | Professional & scientific | 2026 |
| Randalls Contract Services Limited | Transport & logistics | 2012 |
| Randalls Production Solutions Limited | Manufacturing | 2013 |
| Random Opera Company Ltd | Arts & recreation | 2021 |
| Ranelagh Hotel (Wellingborough) Limited | Hospitality | 2010 |
| Rappid Ltd | Health & social care | 2022 |
| Rapport Interpreting Limited | Other services | 2018 |
| Rapport Services Limited | Extraterritorial | 2022 |
| Rare Estates Developer Ltd | Construction | 2026 |
| Rare Estates Group Ltd | Financial services | 2026 |
| Rarlon Ltd | Real estate | 2021 |
| Rasu Enterprise Ltd | Construction | 2024 |
| Rational Investments Limited | Administrative & support | 1987 |
| Ravenscroft Consultancy Services Limited | Real estate | 2014 |