| Qurater Ltd | Information & communication | 2026 |
| Quyck Ltd | Wholesale & retail | 2024 |
| QVH Care Home Limited | Health & social care | 2023 |
| R & FR Ltd | Professional & scientific | 2013 |
| R & H Transport Limited | Transport & logistics | 2018 |
| R & J Capital One Limited | Real estate | 2020 |
| R & S Benning Limited | Wholesale & retail | 2020 |
| R & S Building Services Ltd | Construction | 2020 |
| R & S Engineering Services Ltd | Professional & scientific | 2019 |
| R a Properties Group Ltd | Construction | 2021 |
| R B Tech Services Ltd | Transport & logistics | 2017 |
| R Braich Limited | Wholesale & retail | 2018 |
| R Braich Traders Limited | Construction | 2017 |
| R Devgun Ltd | Information & communication | 2021 |
| R G Button Ltd | Professional & scientific | 2007 |
| R Global Media Ltd | Information & communication | 2019 |
| R K Beauty Studio Ltd | Administrative & support | 2018 |
| R K S Courier Limited | Transport & logistics | 2024 |
| R M Burnham Ltd | Real estate | 2000 |
| R Media Marketing Limited | Professional & scientific | 2026 |
| R N Bees Ltd | Health & social care | 2023 |
| R N Consulting Limited | Information & communication | 2016 |
| R N Online Ltd | Wholesale & retail | 2015 |
| R P a Constructions Limited | Construction | 2019 |
| R P Bray Electrical Contractors Limited | Construction | 2002 |
| R P Haulier Limited | Transport & logistics | 2023 |
| R Prime Consultancy Ltd | Professional & scientific | 2024 |
| R R D Developments Limited | Real estate | 2004 |
| R S Chandi Builders Limited | Construction | 2019 |
| R S P L UK Ltd | Transport & logistics | 2011 |
| R S Properties & Lettings Ltd | Real estate | 2018 |
| R S Trade Link Limited | Wholesale & retail | 2023 |
| R Sons Builder Ltd | Construction | 2024 |
| R&A Real Estate Ltd | Real estate | 2024 |
| R&D House Renovations Limited | Construction | 2026 |
| R&D Space Solutions Ltd. | Professional & scientific | 2014 |
| R&I Kitchen and Bedroom Ltd | Other services | 2023 |
| R&M Prime Property Ltd | Real estate | 2025 |
| R&R Business Ventures Ltd Limited | Wholesale & retail | 2025 |
| R&R Cars Ltd | Wholesale & retail | 2020 |
| R&R Holdings Solution Ltd | Financial services | 2025 |
| R&R Paediatric Healthcare Clinical Services Ltd | Health & social care | 2021 |
| R&R. a Global Limited | Education | 2026 |
| R&R. Simple Solutions Ltd | Manufacturing | 2022 |
| R&S Bedzz Ltd | Wholesale & retail | 2019 |
| R&S Care Limited | Health & social care | 2013 |
| R&S Juices Ltd | Manufacturing | 2026 |
| R&S Private Hire Cars Ltd | Administrative & support | 2022 |
| R-Gas Services Ltd | Construction | 2023 |
| R. Watts & Sons Limited | Agriculture & fishing | 2002 |
| R.A Auto Services Ltd | Wholesale & retail | 2025 |
| R.E Heating Solutions Ltd | Construction | 2019 |
| R.S Ghotra Builder's Ltd | Construction | 2019 |
| R.W. Spicer & Co. Limited | Real estate | 1924 |
| R2H Haulage Ltd | Transport & logistics | 2019 |
| R360 Solutions Limited | Wholesale & retail | 2020 |
| R3B Consultancy Ltd | Information & communication | 2011 |
| RA Contracts Ltd | Information & communication | 2024 |
| RA Empire Group Ltd | Wholesale & retail | 2024 |
| RA Empire International Ltd | Wholesale & retail | 2026 |
| RA Property Construction Ltd | Construction | 2017 |
| RAA Moretown Limited | Real estate | 2025 |
| Raameen Enterprizes Ltd | Transport & logistics | 2025 |
| Rabbit Media Ltd | Information & communication | 2026 |
| Rabboni Outreach Associative Ministries (Roam) | Administrative & support | 2019 |
| Rabeh Consulting Services & Trade Ltd | Wholesale & retail | 2025 |
| Rabia One Ltd | Hospitality | 2024 |
| Rabinder & Chaman Builders Ltd | Construction | 2023 |
| Racemillan Properties Ltd | Real estate | 2024 |
| Racil C Limited | Professional & scientific | 2014 |
| Rackleys Estate Limited | Construction | 2013 |
| Raco AI Technologies Limited | Information & communication | 2025 |
| Racoobo Transport Ltd | Administrative & support | 2021 |
| Racta Services Limited | Health & social care | 2014 |
| RAD MSA Ltd | Health & social care | 2024 |
| RAD Sun Limited | Real estate | 2017 |
| Radantech Limited | Information & communication | 2010 |
| Radhika Assets Ltd | Real estate | 2022 |
| Radhika Consulting Ltd | Information & communication | 2015 |
| Radhika Investments Limited | Real estate | 2019 |
| Radhika Trading Ltd | Wholesale & retail | 2023 |
| Radiance Tech Ltd | Information & communication | 2022 |
| Radiotech Solutions Limited | Information & communication | 2023 |
| Radish Print Limited | Manufacturing | 2018 |
| Radius Logistics UK Ltd | Transport & logistics | 2009 |
| Radro Limited | Wholesale & retail | 2014 |
| Raducanu PT Ltd | Health & social care | 2022 |
| Rafay Properties Ltd | Real estate | 2020 |
| Rafcoassets Ltd | Real estate | 2024 |
| Raff's Food Services Ltd | Hospitality | 2026 |
| Rafi Landscaping & Home Improvement Ltd | Construction | 2025 |
| Rafiki Enterprises Limited | Administrative & support | 2010 |
| Rafiki Northwood Ltd | Construction | 2018 |
| RAG Bakers Limited | Hospitality | 2025 |
| RAG Catering Limited | Hospitality | 2025 |
| RAG Pubs Limited | Hospitality | 2024 |
| Raga Productions Limited | Information & communication | 2025 |
| Ragavillas Ltd | Real estate | 2024 |
| Ragdonit Limited | Transport & logistics | 2015 |
| Ragus Limited | Extraterritorial | 2004 |