| Qandil Barber Salisbury Ltd | Other services | 2024 |
| Qarbarisi Limited | Real estate | 2025 |
| Qburst Technologies UK Ltd | Information & communication | 2011 |
| QH Development Limited | Real estate | 2012 |
| QH Investments Limited | Real estate | 2013 |
| Qianxi Ltd | Hospitality | 2024 |
| QIG Limited | Real estate | 2019 |
| Qilin Capital Limited | Professional & scientific | 2015 |
| Qilin Capital Research Limited | Information & communication | 2015 |
| QRL Management Limited | Other services | 2015 |
| Quadgraphics Limited | Manufacturing | 1991 |
| Quadrifolium Limited | Real estate | 2015 |
| Quaintrelle Ventures Ltd | Administrative & support | 2025 |
| Quality Fitted Interiors Limited | Administrative & support | 2012 |
| Quality Foster Care Limited | Health & social care | 2002 |
| Quality Trout UK Limited | Other services | 2001 |
| Quantext Limited | Professional & scientific | 2017 |
| Quanti Investments Ltd | Real estate | 2019 |
| Quantock Music Limited | Financial services | 2024 |
| Quantum V. Consultancy Limited | Professional & scientific | 1996 |
| Quartet Property (Railway Court) Limited | Households | 2019 |
| Quartz Consultancy & Advisory Limited | Professional & scientific | 2025 |
| Quasar Developments Ltd | Construction | 2013 |
| Quavey Training Services Limited | Education | 2010 |
| Quay Carpentry LLP | | 2017 |
| Qudos Hospitality Limited | Hospitality | 2010 |
| Queens Road (Croydon) Management Company Limited | Households | 2005 |
| Quercus Defence Limited | Public administration | 2015 |
| Quest Media Network Limited | Manufacturing | 2004 |
| Quest Place Management Company Limited | Households | 2007 |
| Questa Wealth & Financial Planning Limited | Administrative & support | 2016 |
| Quick Shop Games Ltd | Wholesale & retail | 2012 |
| Quicke Industries Ltd | Professional & scientific | 2025 |
| Quidham Limited | Information & communication | 1987 |
| Quietivity Ltd | Wholesale & retail | 2024 |
| Quinns Properties Ltd | Real estate | 2024 |
| Quirk Construction Ltd | Construction | 2017 |
| Quixotic Limited | Wholesale & retail | 2021 |
| Quiz Coconut Limited | Arts & recreation | 2016 |
| Quora Offices Limited | Real estate | 2025 |
| Quotehub Limited | Professional & scientific | 2020 |
| Quovis Consulting Ltd | Professional & scientific | 2021 |
| R & a Van Services Ltd | Transport & logistics | 2023 |
| R & D Kitchens and Bathrooms Limited | Construction | 2024 |
| R & D Site Solutions Ltd | Construction | 2021 |
| R & GEE Logistics (UK) Limited | Transport & logistics | 2025 |
| R & I Estates Limited | Real estate | 2023 |
| R & L Bailey Limited | Wholesale & retail | 2007 |
| R and B Projects Ltd | Construction | 2015 |
| R and E Land Rover Specialists Limited | Wholesale & retail | 2012 |
| R and R Building Contractors Limited | Construction | 2012 |
| R Ball and SON Limited | Construction | 2003 |
| R C Williams Properties Ltd | Real estate | 2024 |
| R D Avery Limited | Wholesale & retail | 2013 |
| R Davies Recruitment Ltd | Administrative & support | 2023 |
| R H Property (Salisbury) Ltd | Construction | 2020 |
| R J Electrical Services Limited | Construction | 2003 |
| R J Moody Limited | Transport & logistics | 2014 |
| R J Swift Limited | Wholesale & retail | 2003 |
| R K Bayford Building Contractors Ltd | Construction | 2016 |
| R L Field Sports Ltd | Agriculture & fishing | 2010 |
| R Stokes Ltd | Manufacturing | 2022 |
| R Top Trading Limited | Real estate | 2021 |
| R Vincent & Sons Limited | Manufacturing | 2008 |
| R Woodhouse Limited | Administrative & support | 2011 |
| R&C Developments Limited | Construction | 2003 |
| R&C Management Holdings Limited | Financial services | 2025 |
| R&C Spaces Ltd | Real estate | 2025 |
| R&Cm Consultancy Limited | Wholesale & retail | 2024 |
| R&M Floor to Finish Ltd | Construction | 2025 |
| R&Q Capital NO. 1 Limited | Financial services | 2010 |
| R&Q Capital NO. 6 Limited | Administrative & support | 2009 |
| R&Q Capital NO. 7 Limited | Administrative & support | 2009 |
| R&Q Capital NO. 8 Limited | Financial services | 2006 |
| R&U Delivery Ltd | Transport & logistics | 2026 |
| R-X Studio London Ltd | Manufacturing | 2023 |
| R. Moulding & Co. (Salisbury) Limited | Construction | 1964 |
| R.G.V. Engineering (Netheravon) Limited | Construction | 1970 |
| R.H.M. Contracts Limited | Construction | 1999 |
| R.J.B Farms Ltd | Agriculture & fishing | 2025 |
| R.M.Williams Proprietary Limited | | 1989 |
| R.O.B.E. Manufacturing Ltd | Professional & scientific | 2026 |
| R.S. Cook & Sons Limited | Construction | 1972 |
| R.S. Tech Limited | Information & communication | 1998 |
| R.V. Maidment Limited | Water & waste | 1999 |
| R2 Consulting Ltd | Professional & scientific | 2018 |
| R2 Limited Company Ltd | Manufacturing | 2026 |
| R3M Layout Services Ltd | Professional & scientific | 2026 |
| Raal Holdings Ltd | Real estate | 2025 |
| Raans Estates Limited | Real estate | 1992 |
| Rabie Bar Birmingham Limited | Real estate | 2026 |
| Rachel White Accountancy Services Limited | Professional & scientific | 2019 |
| Raddon Court Limited | Agriculture & fishing | 1991 |
| Radfam Limited | Professional & scientific | 2025 |
| Radiology Masterclass Limited | Education | 2017 |
| Radiologyhub Limited | Other services | 2025 |
| Radiquip Media Services Limited | Information & communication | 2006 |
| Radiquip Properties Ltd | Construction | 2019 |
| Radnor Arms PUB Co Ltd | Hospitality | 2019 |
| Raebirn Limited | Households | 1982 |