| Quartz Automation Ltd | Construction | 2026 |
| Quartz Financial Planning Ltd | Financial services | 2015 |
| Quay West (Chatham) Management Company Limited | Households | 2004 |
| Quest Construction Consultancy Ltd | Construction | 2024 |
| Quest Fitness (UK) Limited | Arts & recreation | 2019 |
| Quick FIX WP Ltd | Information & communication | 2025 |
| Quick Quick Care Ltd | Health & social care | 2024 |
| Quickbrick Improvements Ltd | Construction | 2024 |
| Quilibrium Production Ltd | Arts & recreation | 2020 |
| Quinterra Ltd | Professional & scientific | 2020 |
| Quirky IS ME Ltd | Wholesale & retail | 2024 |
| Qwikplot Limited | Professional & scientific | 1996 |
| R & B Connectivity Ltd | Information & communication | 2025 |
| R & B Recovery Ltd | Other services | 2021 |
| R & C Gregory Publishing Limited | Information & communication | 1997 |
| R & R Electrical & Mechanical Services Limited | Construction | 1995 |
| R & S Ince Tarmacing Ltd | Construction | 2003 |
| R & T Scaffolding Limited | Administrative & support | 2007 |
| R a Mitchell & Co Ltd | Professional & scientific | 2011 |
| R Angell Electrical Ltd | Construction | 2023 |
| R B Doors & Joinery Limited | Manufacturing | 2006 |
| R H Ventilation Services Limited | Administrative & support | 2019 |
| R L Busneac Limited | Health & social care | 2012 |
| R Mason Logistics & Storage Limited | Transport & logistics | 2015 |
| R P Evans Haulage Ltd | Transport & logistics | 2023 |
| R P W Motors Ltd | Wholesale & retail | 2024 |
| R U Holdings Ltd | Real estate | 2019 |
| R W Fabrications Ltd | Manufacturing | 2019 |
| R Winter Tooling LLP | | 2009 |
| R&A Kent Ltd | Real estate | 2018 |
| R&A Property and Maintenance Services Ltd | Construction | 2025 |
| R&B Accountancy Services Limited | Professional & scientific | 2012 |
| R&B Bookkeeping Ltd | Professional & scientific | 2019 |
| R&B Tax Ltd | Professional & scientific | 2019 |
| R&G 21 Business Global Company Limited | Wholesale & retail | 2023 |
| R&L Telecoms Ltd | Information & communication | 2025 |
| R&M Estates and Management Ltd | Construction | 2019 |
| R&R Accountancy Ltd | Professional & scientific | 2022 |
| R&R Hair and Wigs Ltd | Other services | 2022 |
| R&R Property and Building Limited | Real estate | 2024 |
| R&R Property Invest Limited | Real estate | 2024 |
| R&T Print Limited | Administrative & support | 2014 |
| R.A Leverett Technical Limited | Professional & scientific | 2021 |
| R.A. Whitebread (Farms) Limited | Agriculture & fishing | 2000 |
| R.Biller & Co Limited | Wholesale & retail | 1939 |
| R.E.D Plumbing and Heating LLP | | 2020 |
| R.E.Knight Limited | Manufacturing | 1970 |
| R.Swain & Sons Limited | Transport & logistics | 1941 |
| R.W Install Ltd | Construction | 2018 |
| RAA RAA Limited | Hospitality | 2025 |
| Racerival Syndicate Limited | Arts & recreation | 2025 |
| Racetech Systems Ltd | Manufacturing | 2026 |
| Rachel’S Homemade Treats Ltd | Wholesale & retail | 2022 |
| RAD Tiling Contractors LLP | | 2018 |
| RAD Tiling Ltd | Construction | 2020 |
| RAD Wine Limited | Wholesale & retail | 2024 |
| Radah Care Ltd | Health & social care | 2019 |
| Radiance Cosmetics Limited | Other services | 2024 |
| Radiance Solar & Electrical Ltd | Construction | 2025 |
| Radio Caroline AM Broadcasting Ltd | Information & communication | 2011 |
| Radio Caroline Limited | Information & communication | 1987 |
| Radio Caroline North Limited | Information & communication | 2013 |
| Raeku Trade Ltd | Wholesale & retail | 2024 |
| Raevan Supplies Limited | Wholesale & retail | 2000 |
| Rafaeli Services Limited | Health & social care | 2016 |
| Rage OUT Ltd | Arts & recreation | 2023 |
| Raigins Group Ltd | Administrative & support | 2022 |
| Raigins Ltd | Administrative & support | 2011 |
| Rainbow S&Te Ltd | Professional & scientific | 2017 |
| Rainbows Day Nurseries Ltd | Health & social care | 2020 |
| Rainforest Research Ltd. | Professional & scientific | 2023 |
| Rainham Meats (Kent) Ltd | Wholesale & retail | 2012 |
| Raise the Tide Ltd | Professional & scientific | 2026 |
| Raja Mappanar Ltd | Wholesale & retail | 2023 |
| Raki Experience Limited | Administrative & support | 2024 |
| Ranger Support Services Limited | Professional & scientific | 2016 |
| Ranscombe Close Management Limited | Households | 1975 |
| Ranscombe Studios Ltd | Information & communication | 2024 |
| RAP Interiors Ltd | Construction | 2000 |
| Rapid DEV Limited | Information & communication | 2013 |
| Rapid Safety Solutions Ltd | Professional & scientific | 2025 |
| Rapidmanandvan Ltd | Transport & logistics | 2026 |
| RAS Design & Build Ltd | Construction | 2024 |
| Rath Construction Ltd | Construction | 2025 |
| Raven Protection Limited | Administrative & support | 2024 |
| Raven Technical Services Limited | Professional & scientific | 2026 |
| Ravenswood Environmental Services Ltd | Professional & scientific | 2018 |
| RAY Imaging UK Limited | Wholesale & retail | 2025 |
| Ray-Dor Ltd | Other services | 2016 |
| RAY42TRANSIT Ltd | Transport & logistics | 2024 |
| Raymond Cleaning Services Ltd | Administrative & support | 2025 |
| Razzi Dazzle Ltd | Administrative & support | 2023 |
| RB Consulting Solutions Limited | Financial services | 2025 |
| RB Vending Ltd | Wholesale & retail | 2024 |
| RBC Specialist Contractors Limited | Construction | 2007 |
| RBP Consulting Limited | Professional & scientific | 2023 |
| Rccg Arena of Abundance | Other services | 2026 |
| Rccg Let's Go Fishing | Other services | 2025 |
| RCP Consultancy Limited | Information & communication | 2003 |
| RCW Scaffolding Ltd | Construction | 2025 |