| Qbic Hunter Services Limited | Administrative & support | 2014 |
| QK Global Sales Limited | Wholesale & retail | 2025 |
| QRS Fruit & VEG Ltd | Wholesale & retail | 2018 |
| QSM Tech Limited | Wholesale & retail | 2013 |
| Qualified Pharma Consulting Ltd | Manufacturing | 2022 |
| Quality Drive & Landscape UK Limited | Administrative & support | 2023 |
| Quality Emporium Ltd | Wholesale & retail | 2025 |
| Quality Management Consultancy Limited | Administrative & support | 2017 |
| Quality Roofing & Building Ltd | Construction | 2024 |
| Quality Way Ltd | Other services | 2016 |
| Quantum Cards Ltd | Wholesale & retail | 2025 |
| Quantum Catering Services Ltd | Hospitality | 2016 |
| Quantum Markets Limited | Professional & scientific | 2023 |
| Quantumedge IT Solutions Ltd | Information & communication | 2025 |
| Quba Associates Limited | Hospitality | 2026 |
| Quddusi & Sons Ltd | Wholesale & retail | 2021 |
| Queralis Ltd | Professional & scientific | 2025 |
| Questrrow Limited | Administrative & support | 2017 |
| Quetta Chaii Wala Limited | Hospitality | 2022 |
| Quick Beauty Supply Ltd | Wholesale & retail | 2020 |
| Quick Concrete Ltd | Manufacturing | 2020 |
| Quick FIX Auto Garage Limited | Wholesale & retail | 2017 |
| Quick FLY Travel Limited | Administrative & support | 2012 |
| Quick Kitchen & Bedroom Ltd | Manufacturing | 2026 |
| Quick Scaffolding Limited | Construction | 2014 |
| Quick Service Concepts Ltd | Hospitality | 2025 |
| Quick Systems (U.K.) Limited | Information & communication | 1990 |
| Quick Way Shutters Ltd | Construction | 2022 |
| Quickatze Ltd | Wholesale & retail | 2023 |
| Quicklaptop Ltd | Wholesale & retail | 2024 |
| Quicklist Co. Ltd | Wholesale & retail | 2025 |
| Quinfin Ltd | Financial services | 2018 |
| Quintessential Homes Ltd | Construction | 2020 |
| Qvkdeep Foods Limited | Wholesale & retail | 2025 |
| R & a a Properties Ltd | Real estate | 2019 |
| R & M Accountancy Solutions Ltd | Professional & scientific | 2018 |
| R & M Electrics Ltd | Energy | 2021 |
| R & M Housing Investments Ltd | Real estate | 2020 |
| R & P Trading Limited | Construction | 2014 |
| R & R Assets Management Ltd | Real estate | 2021 |
| R a Building & Construction Ltd | Construction | 2021 |
| R B Partners Ltd | Wholesale & retail | 2025 |
| R Jeet Services Ltd | Construction | 2021 |
| R K Construction & Development Ltd | Construction | 2026 |
| R K Jewellery Ltd | Wholesale & retail | 2025 |
| R Kitchen & Caterers Limited | Hospitality | 2022 |
| R M S Global Limited | Professional & scientific | 2009 |
| R Maria Limited | Administrative & support | 2023 |
| R P Bedi Ltd | Wholesale & retail | 2015 |
| R P L Groceries Ltd | Wholesale & retail | 2021 |
| R P S Properties Limited | Real estate | 2002 |
| R Plus Consultants Limited | Professional & scientific | 2015 |
| R S Builders Rana Ltd | Construction | 2021 |
| R S Global Services Ltd | Real estate | 2022 |
| R Sharma Enterprise Ltd | Transport & logistics | 2026 |
| R&A Asset Management Ltd | Real estate | 2021 |
| R&B Trading Ltd | Wholesale & retail | 2023 |
| R&D Bodyguard Ltd | Administrative & support | 2019 |
| R&P Corporation Ltd | Real estate | 2023 |
| R&S Creators Limited | Real estate | 2024 |
| R. Singh Limited | Transport & logistics | 2025 |
| R.B Express Ltd | Administrative & support | 2012 |
| R.S.S. Enterprises Limited | Wholesale & retail | 2011 |
| R13 Properties Limited | Real estate | 2023 |
| R3C Limited | Real estate | 2022 |
| RA Electrics Limited | Construction | 2026 |
| RA Property Trading Limited | Real estate | 2020 |
| Raad London Limited | Wholesale & retail | 2020 |
| Raam Trading Ltd | Wholesale & retail | 2025 |
| Raaz Estates Ltd | Construction | 2017 |
| Raaz Traders Ltd | Other services | 2018 |
| Rabi's the House of Brands Ltd | Wholesale & retail | 2021 |
| Rabnoor Store Ltd | Wholesale & retail | 2023 |
| Radi Group Limited | Administrative & support | 2020 |
| Radlett Local Ltd | Wholesale & retail | 2025 |
| Rafael Equipments Ltd | Wholesale & retail | 2019 |
| Rafaqat's Wardrobe Ltd | Wholesale & retail | 2024 |
| Rahaniss Ltd | Arts & recreation | 2025 |
| Raheja Accounting & Business Solutions Ltd | Professional & scientific | 2025 |
| Rahma Restaurant Ltd | Hospitality | 2025 |
| Rahul Kumar Ltd | Construction | 2025 |
| RAI Cleaning Ltd | Transport & logistics | 2025 |
| RAI Scaffolding Ltd | Construction | 2023 |
| Raico International Ltd | Wholesale & retail | 2019 |
| Raidock Limited | Administrative & support | 2008 |
| Raidokill Limited | Manufacturing | 1992 |
| Rainbow Logistics Ltd | Transport & logistics | 1994 |
| Raisilience Ltd | Professional & scientific | 2019 |
| RAJ Building Contractors Limited | Construction | 2010 |
| RAJ Building Contractors- Gerrards Cross Builders Ltd | Construction | 2026 |
| RAJ Food and Wine UB1 Ltd | Other services | 2020 |
| RAJ Guru Foundation | Health & social care | 2025 |
| RAJ Hair Dressers Ltd | Other services | 2023 |
| RAJ Homes Ltd | Real estate | 2022 |
| RAJ International Store Ltd | Wholesale & retail | 2023 |
| RAJ Kitchens UK Ltd | Construction | 2015 |
| Raja Rajni Bedding Ltd | Other services | 2025 |
| Rajan C Music Ltd | Arts & recreation | 2012 |
| Rajesh Services Limited | Information & communication | 2025 |
| Rajesh Services Private Limited | Information & communication | 2025 |