| 420 Tattoo Co Limited | Wolverhampton | 2019 |
| 422WW Ltd | London | 2023 |
| 423 Footscray Road Limited | London | 2001 |
| 424 Edin Ltd. | Edinburgh | 2003 |
| 42COURSES.COM Limited | London | 2015 |
| 42HS Hairdressing Ltd | Alton | 2026 |
| 42PARKAVENUE Limited | South Shields | 2016 |
| 43 Countess Road Limited | | 2004 |
| 43 Davies Street Limited | London | 2018 |
| 43 Fore Street Ltd | Bodmin | 2019 |
| 43 Hendon Lane (Management) Limited | London | 1975 |
| 43 Hermon Hill RTM Company Ltd | London | 2004 |
| 43 North Ltd | Bristol | 2020 |
| 43 Royal Park Management Company Limited | Somerset | 1989 |
| 43 Studio Ltd | Twickenham | 2026 |
| 430 Management Ltd | Belfast | 2020 |
| 432 Fitness Limited | Walton On Thames | 2024 |
| 432 Social Wellbeing UK Ltd | London | 2025 |
| 43:19 Ltd | Bala | 2024 |
| 43AG Barber Ltd | Edinburgh | 2025 |
| 44 Fortune Green Road Management Company Limited | Friern Barnet | 2005 |
| 44 Highcroft Villas Limited | Brighton | 2000 |
| 44 Hill Capital Management Services Ltd | London | 2025 |
| 44 Master Holdings Limited | Mayfair | 2023 |
| 44 Outlet Limited | Ilford | 2025 |
| 44 Studio (NE) Ltd | Gateshead | 2026 |
| 44 Turkish Ltd | Manchester | 2022 |
| 44 Uppercuts Ltd | Edinburgh | 2026 |
| 44 Windermere Avenue Freehold Limited | Guildford | 2021 |
| 440HZ Consulting Ltd | Warrington | 2021 |
| 441 Trust Company Limited | London | 2015 |
| 444 Beauty Limited | Cleethorpes | 2024 |
| 444 the Studio Ltd | Burton-On-Trent | 2025 |
| 444VIDEO Limited | Monmouth | 2024 |
| 445 Group Ltd | London | 2023 |
| 44F1 Ltd | London | 2023 |
| 44F2 Ltd | London | 2023 |
| 44F3 Ltd | London | 2023 |
| 44LOUNGE Limited | London | 2021 |
| 44PERFORMANCE Ltd. | Birmingham | 2025 |
| 45 Kings Avenue Management Limited | London | 2015 |
| 45 Lordship Park Freehold Ltd | London | 2023 |
| 45 Salon PVT Limited | Leeds | 2020 |
| 45-47 Leinster Square (Freehold) Limited | London | 2012 |
| 45-51 Bowood Road Freehold Limited | Braintree | 2007 |
| 45/50 Limited | Lisburn | 2019 |
| 451 Football Consultancy Limited | Glasgow | 2016 |
| 4548 Limited | Aberdeen | 2024 |
| 46 Barbers Main Street Ltd | Derby | 2021 |
| 46 Berkeley Square Ltd | London | 2015 |
| 46 Christchurch Avenue Management Limited | London | 2011 |
| 46 Denison Road Management Limited | Manchester | 1991 |
| 46 Zetland Road (Redland) Management Company Limited | Bristol | 2006 |
| 4621 Limited | Hoddesdon | 2024 |
| 468 Barber Shop Ltd | Preston | 2017 |
| 47 Belsize Park Gardens Freehold Limited | London | 2011 |
| 47 BP Ltd | Cardiff | 2014 |
| 47 Emperors Gate Management Company Ltd | London | 2022 |
| 48 London Limited | London | 2015 |
| 48 Upper Tollington Park Management Company Limited | London | 2013 |
| 48 Wells Road Bath (Management Company) Limited | Bath | 1993 |
| 48.3 Training Limited | Marlow | 2014 |
| 480HZ Ltd | London | 2022 |
| 488 Solutions Limited | Warden-Sheerness | 2012 |
| 48HASHM Traditional Barber Ltd | Ruthin | 2025 |
| 49 Beauchamp Place Ltd | London | 2018 |
| 49 Tabernacle Street Ltd | London | 2025 |
| 49-50 Berkeley Square Limited | London | 2024 |
| 49-55 Hickory Drive Limited | Birmingham | 2014 |
| 4915 Limited | Manchester | 2023 |
| 4946 S Limited | Barnsley | 2008 |
| 499 Oundle Road Limited | Peterborough | 2024 |
| 4:12 MEN Ltd | Whyteleafe | 2021 |
| 4A Aesthetics Ltd. | Bury St. Edmunds | 2025 |
| 4A'S PVT Ltd | Derby | 2026 |
| 4ANGELS Investments Limited | Manchester | 2016 |
| 4BEES Miracles Services Ltd | Colchester | 2016 |
| 4CLEANING Domestic Ltd | Wolverhampton | 2020 |
| 4CLEANING Facilities Ltd | Wolverhampton | 2025 |
| 4CT Limited | Manchester | 2003 |
| 4D Barber Ltd | Greenford | 2026 |
| 4D Beauty Limited | Dunstable | 2021 |
| 4D Cosmetics Limited | Milton Keynes | 2023 |
| 4D Express Solutions Ltd | London | 2023 |
| 4D London Clinic Ltd | Harrow | 2018 |
| 4D Tree Survey Limited | Nottingham | 2016 |
| 4DEAL Ltd | Isleworth | 2015 |
| 4DM Group Limited | Leicester | 1998 |
| 4DM Holdings Limited | Leicester | 2003 |
| 4E'S Studio Ltd | Gateshead | 2023 |
| 4ELEMENTS Company (Touch, Communication, Resilience) Ltd | Morecambe | 2024 |
| 4EVAYOUNG Limited | Bridgend | 2012 |
| 4EVER Beauty Limited | West Drayton | 2017 |
| 4EVER Glamour Ltd | Preston | 2023 |
| 4EVER Nails Beauty Ltd | Preston | 2025 |
| 4F Records Ltd | Ellesmere Port | 2025 |
| 4FRONT Physiotherapy Ltd | Eastbourne | 2017 |
| 4G Care Plus Ltd | London | 2021 |
| 4G Fitness Ltd | Mitcham | 2020 |
| 4G Scaffolding Ltd | Croydon | 2017 |