| Quarters Group Limited | Financial services | 2021 |
| Quarters Harrogate Ltd | Construction | 2024 |
| Quarters Holdings Limited | Financial services | 2024 |
| Quarters Homes Limited | Construction | 2016 |
| Quarters House Ltd | Real estate | 2020 |
| Quarters Kingsley Ltd | Construction | 2021 |
| Quarters Life Ltd | Wholesale & retail | 2021 |
| Quarters Sunset Limited | Construction | 2022 |
| Quattro (Southfield) Limited | Construction | 2018 |
| Quench and Conquer Ltd | Wholesale & retail | 2025 |
| Quest 4 FUN Ltd | Other services | 2017 |
| Quest Park Management Company Limited | Real estate | 2005 |
| Quetzal International Ltd | Health & social care | 2017 |
| Quiba Limited | Real estate | 2020 |
| Quickball Limited | Arts & recreation | 2022 |
| Quilion Holdings Limited | Financial services | 2026 |
| Quince Catering Limited | Hospitality | 2013 |
| Quinn Anaesthetic Services Ltd | Health & social care | 2016 |
| Quintoppe Limited | Extraterritorial | 2020 |
| Quoin Financial Ltd | Professional & scientific | 2026 |
| Quorum Events Ltd | Administrative & support | 2017 |
| Quotient FM Ltd | Professional & scientific | 2026 |
| Quratulain Wajeeha Ltd | Wholesale & retail | 2024 |
| Qureshi Medical Services Ltd | Health & social care | 2024 |
| QX9 Limited | Professional & scientific | 2021 |
| R & G Lettings Limited | Real estate | 2022 |
| R & S Agencies Ltd | Wholesale & retail | 2016 |
| R Beaumont Limited | Construction | 2010 |
| R D U Construction Ltd | Construction | 2016 |
| R E Harker Ltd | Construction | 2007 |
| R F Brands Ltd | Wholesale & retail | 2025 |
| R F Tuff Ltd | Construction | 2010 |
| R G G Calibration Services Limited | Professional & scientific | 2006 |
| R H P D Ltd | Construction | 2026 |
| R J Carrick Limited | Professional & scientific | 2010 |
| R J Smith & SON Farming Ltd | Agriculture & fishing | 2013 |
| R L Green Joinery & Building Contractor Limited | Construction | 2003 |
| R L Medical Ltd | Health & social care | 2024 |
| R M Facility Services Limited | Administrative & support | 2009 |
| R Nelson Plumbing and Heating Limited | Construction | 2025 |
| R Stride & Co (IT) Ltd | Information & communication | 2017 |
| R Stride & Co Accountants Limited | Professional & scientific | 2010 |
| R Stride & Co Driving Instructors Limited | Professional & scientific | 2010 |
| R Stride & Co LLP | | 2010 |
| R T Window Cleaning Ltd | Administrative & support | 2019 |
| R W R Building Limited | Construction | 2013 |
| R Walters Limited | Professional & scientific | 2013 |
| R&F Ventures Ltd | Real estate | 2026 |
| R&S Holdings Group Limited | Financial services | 2024 |
| R. Congdon Consulting Ltd | Professional & scientific | 2014 |
| R.E.R.A. Properties Limited | Construction | 2005 |
| R.E.S Environmental Ltd | Construction | 2003 |
| R.E.S. Environmental Holdings Ltd | Financial services | 2022 |
| R.L. Thorpe Limited | Construction | 2006 |
| R.S. Church (Plant Hire) Limited | Construction | 2013 |
| R.S. Holdings (US) Limited | Administrative & support | 2026 |
| R1CHARD Limited | Extraterritorial | 2020 |
| R1CK Limited | Extraterritorial | 2020 |
| R1CKY Limited | Extraterritorial | 2020 |
| R4 Investments Limited | Real estate | 2017 |
| R4J Ltd | Extraterritorial | 2016 |
| R4Y Ltd | Extraterritorial | 2016 |
| RA Barber P Ltd | Other services | 2024 |
| RA Gadgets Ltd | Wholesale & retail | 2024 |
| Rabbit Head Productions Ltd | Arts & recreation | 2023 |
| Rachel Glendinning Ltd | Extraterritorial | 2020 |
| Rachel's Fitness for Mums Limited | Health & social care | 2015 |
| Racing Guns Limited | Manufacturing | 2021 |
| Racing Lobster Ltd | Information & communication | 2019 |
| RAD1O Limited | Extraterritorial | 2026 |
| Radial 5 Ltd | Wholesale & retail | 2018 |
| Radiant Dental Laboratory Limited | Health & social care | 2015 |
| Radiant Star Yoga Ltd | Arts & recreation | 2009 |
| Radiologically Ltd | Health & social care | 2020 |
| Radiology Assemble Limited | Health & social care | 2022 |
| Radiology Management Ltd | Health & social care | 2025 |
| Radley Court Management Company Limited | Households | 2011 |
| Raft Recruitment Limited | Administrative & support | 2020 |
| Rafted Limited | Professional & scientific | 2024 |
| Ragan Howard Limited | Administrative & support | 2016 |
| Ragdolls Harrogate Limited | Wholesale & retail | 2015 |
| Railton Properties Limited | Real estate | 2002 |
| Rainbows and Fairies Limited | Wholesale & retail | 2024 |
| Rajendra Healthcare Limited | Health & social care | 2015 |
| Rakaez AL Omran Ltd | Construction | 2023 |
| RAM Linen and Cleaning Ltd | Administrative & support | 2026 |
| RAM Short Stay Management Ltd | Hospitality | 2026 |
| Ramstone Holistics Ltd | Health & social care | 2022 |
| Range Right Limited | Wholesale & retail | 1996 |
| Range-Sport-Uk Ltd | Manufacturing | 2025 |
| RAP1D Limited | Extraterritorial | 2020 |
| Rapid Training Limited | Education | 1997 |
| Rarely Unable Limited | Professional & scientific | 2020 |
| Rascals Entertainment Ltd | Administrative & support | 2024 |
| RASH1D Limited | Extraterritorial | 2018 |
| Rastrick Storage Limited | Real estate | 1940 |
| Ratatouille Limited | Extraterritorial | 2012 |
| Ratham Estate Company Limited | Real estate | 2010 |
| Raven Nest Property Limited | Real estate | 2025 |
| Ravenbirk Ltd | Hospitality | 2025 |