| Qaidi 408 Ltd | Hospitality | 2024 |
| Qbay Career Ltd | Education | 2025 |
| Qcas Ltd | Professional & scientific | 2022 |
| QDR Solicitors Limited | Administrative & support | 2011 |
| Qswlk Limited | Professional & scientific | 2025 |
| Quadleaf Ltd | Professional & scientific | 2025 |
| Quadrangle One Limited | Information & communication | 1997 |
| Quain & Tara Property Holdings Ltd | Real estate | 2026 |
| Qualis Construction Holdings Ltd | Financial services | 2021 |
| Qualis Construction Ltd | Construction | 2021 |
| Qualis Developments (Hillside) Ltd | Construction | 2021 |
| Quasar Discos Limited | Arts & recreation | 2012 |
| Quatronix Ltd | Professional & scientific | 2026 |
| QUAYSIDE2 Ltd | Real estate | 2025 |
| Quaywest Accountants & Business Consultants Ltd | Professional & scientific | 2020 |
| Quaywest Group Ltd | Professional & scientific | 2020 |
| Quaywest Housing Ltd | Health & social care | 2015 |
| Quaywest Recruitment Limited | Administrative & support | 2018 |
| Queensway Furniture Ltd | Wholesale & retail | 2021 |
| Quick Crave Warwick Ltd | Hospitality | 2026 |
| Quick G Trans Ltd | Transport & logistics | 2025 |
| Quiet Luxury Inc Ltd | Households | 2024 |
| Quiet Space Ltd | Professional & scientific | 2017 |
| Quietco Ltd | Construction | 2012 |
| Quinnio Limited | Real estate | 1985 |
| Quorn House Management Co. Ltd | Households | 1973 |
| Qureshi Amazon Trading Ltd | Wholesale & retail | 2026 |
| Qwertz & Associates Limited | Professional & scientific | 2017 |
| R & a Business Support Ltd | Professional & scientific | 2017 |
| R & Co Communications Limited | Administrative & support | 2001 |
| R & R Naik Properties Ltd | Real estate | 2021 |
| R & S Carpentry Limited | Construction | 2017 |
| R & S Finishers Limited | Professional & scientific | 2018 |
| R & S Property Holdings Ltd | Real estate | 2022 |
| R a Homes Limited | Real estate | 2016 |
| R C B Holdings Limited | Financial services | 2017 |
| R C E Welsh Coventry Limited | Construction | 2017 |
| R J Properties Services Ltd | Real estate | 2022 |
| R L C Homes Ltd | Real estate | 2024 |
| R LAD Consultancy Limited | Health & social care | 2014 |
| R M Design & Engineering Limited | Manufacturing | 2012 |
| R York Construction Ltd | Construction | 2021 |
| R&A Retail Limited | Wholesale & retail | 2020 |
| R&H Trading Ltd | Construction | 2021 |
| R&S Houses Ltd | Real estate | 2025 |
| R&S Laundry Services Limited | Other services | 2022 |
| R&S Proheat Ltd | Construction | 2019 |
| R&Ts Holdings Limited | Real estate | 2019 |
| R.G.Griffin & Co.(Builders & Contractors)Limited | | 1965 |
| R.L.F Plant Ltd | Administrative & support | 2015 |
| R.M.F. Properties Limited | Real estate | 2002 |
| R.M.S (Midlands) Properties Limited | Real estate | 2021 |
| R.M.S Auto Centre Limited | Wholesale & retail | 2014 |
| Raanee Trading Limited | Wholesale & retail | 2026 |
| Rachel Henke Global Limited | Administrative & support | 2015 |
| Racket Jacket Ltd | Manufacturing | 2025 |
| Racquet Escapes Ltd | Administrative & support | 2025 |
| RAD Consultancy Limited | Professional & scientific | 2026 |
| Radeva Limited | Construction | 2025 |
| Radford Panel Company Limited | Manufacturing | 1976 |
| Radford Road Limited | Households | 1991 |
| Radhisha Consulting Ltd | Information & communication | 2026 |
| Radical Outreach Limited | Other services | 2002 |
| Radius Engineering Services Limited | Construction | 2005 |
| Radsem Limited | Wholesale & retail | 2019 |
| RAI Group Holding Limited | Financial services | 2024 |
| RAI Integral Ltd | Construction | 2017 |
| RAI Investment Group LLP | | 2021 |
| RAI Property Investments Ltd | Real estate | 2003 |
| Rainbow Day Nursery (Newcastle) Limited | Education | 2003 |
| Rainbow Planning Limited | Professional & scientific | 2014 |
| Raine West Construction Limited | Construction | 2016 |
| Raisa Logistics Ltd | Transport & logistics | 2026 |
| Raleigh Partners Ltd | Wholesale & retail | 2024 |
| RAM Investment Management Ltd | Financial services | 2010 |
| RAM Residential Ltd | Real estate | 2025 |
| Ramad Consulting Limited | Information & communication | 2011 |
| Raman Holdings Limited | Real estate | 2025 |
| Randle Engineering Limited | Administrative & support | 2014 |
| Randle Engineering Solutions Limited | Professional & scientific | 1994 |
| Randle Maidenhead Holdings Limited | Financial services | 2022 |
| Randle Software Limited | Information & communication | 2021 |
| RAP Enterprises Ltd | Other services | 2008 |
| Rapid Force Ltd | Wholesale & retail | 2022 |
| Rare Access Limited | Professional & scientific | 2017 |
| Rasalo Ltd | Arts & recreation | 2014 |
| Rata Trading Limited | Hospitality | 2026 |
| Rathbone Holdings Limited | Financial services | 2025 |
| Rattle Art Ltd | Manufacturing | 2020 |
| Ravenfayre Limited | Real estate | 1973 |
| Ravensgate Homes Limited | Construction | 1997 |
| Ravenstall Ltd | Hospitality | 2008 |
| Rawcliffe Consulting Limited | Professional & scientific | 2023 |
| Raygun Consulting Limited | Administrative & support | 2011 |
| RCL Property Investments Limited | Real estate | 2016 |
| Rcld Ltd | Construction | 2020 |
| RE Hutt Financial Services Limited | Financial services | 1999 |
| RE Hutt Holdings Limited | Financial services | 2017 |
| Reac Project Management Limited | Professional & scientific | 2022 |
| Reach Lasers Ltd | Administrative & support | 2018 |