| 44 Construction Consultancy Limited | Chorley | 2013 |
| 44 Crewdson Road Limited | London | 2005 |
| 44 Digital Limited | Staverton | 2012 |
| 44 Elements Ltd | Nottingham | 2018 |
| 44 First AID Limited | Warrington | 2018 |
| 44 Glebe Road Ltd | London | 2018 |
| 44 Growth Ltd | Altrincham | 2025 |
| 44 Holland Villas Road Limited | London | 2016 |
| 44 International Ltd | Dorking | 2023 |
| 44 IT Ltd | Coventry | 2010 |
| 44 North Limited | Darlington | 1889 |
| 44 North Street Management Company Limited | Harrogate | 2006 |
| 44 ST. James's Road (Surbiton) Residents Association Limited | Surbiton | 1982 |
| 440 Associates Ltd | Brentford | 2016 |
| 440 Solutions Limited | Brentford | 2020 |
| 442 Turfcare Limited | Ipswich | 2023 |
| 442 York Ltd | Thirsk | 2020 |
| 444 YOU Ltd | Salford | 2025 |
| 4482 Sasapari C.I.C. | Sunbury-On-Thames | 2019 |
| 44:44 Cleaning Services Ltd | Gravesend | 2025 |
| 44LINKED Ltd | London | 2019 |
| 45 and 47 Church Road Earley (Reading) Management Company Limited | Berkshire | 1995 |
| 45 Eaton Place Limited | London | 2010 |
| 45 Hallmark Limited | London | 2014 |
| 45 Management Limited | High Wycombe | 2001 |
| 45 Original Limited | Buckhurst Hill | 2020 |
| 45 ST Paul's Road Management Company Limited | London | 1998 |
| 45 Sussex Place Management Committee Ltd. | Bristol | 2014 |
| 45 the Mall Commercial Limited | Rochford | 2023 |
| 45 the Mall Manco Limited | Camberley | 2023 |
| 45 Wardo Avenue (Management Company) Limited | London | 1999 |
| 45 Years Films Limited | London | 2014 |
| 456 Chester Road Limited | Manchester | 2005 |
| 45CDOSECURITY Limited | Wirral | 2025 |
| 45WW Ltd | London | 2025 |
| 46 Charleville Road Management Limited | Chislehurst | 2013 |
| 46 High Street DN9 Limited | Birmingham | 2024 |
| 46 Hill House Road Ltd | London | 2014 |
| 46 Ifield Road Management Limited | Pinner | 2009 |
| 46 Management Ltd | Glasgow | 2019 |
| 46 Mill Street Ltd | Newry | 2022 |
| 461 Marine Road East Management Company Ltd | Morecambe | 2017 |
| 46BP Management Company Ltd | Bristol | 2018 |
| 46RED Ltd | Wolverhampton | 2016 |
| 47 Battersea Rise Management Limited | Bray On Thames | 2010 |
| 47 Cambray Road Residents Limited | London | 2012 |
| 47 Canterbury Road (Margate) Management Limited | Margate | 2018 |
| 47 Chaucer Road Bedford Management Limited | | 1989 |
| 47 Commercial Limited | Glasgow | 2024 |
| 47 Ethelbert Road Freehold Limited | Cliftonville | 2016 |
| 47 First Avenue Limited | Middlesex | 2005 |
| 47 Fordwych Road Management Company Limited | | 2007 |
| 47 Howbury Street Bedford Limited | Bedford | 1987 |
| 47 Miranda Road (Management) Limited | | 1997 |
| 47 ST George's Drive Limited | Dorchester | 2011 |
| 47 ST. John's Villas Limited | London | 2007 |
| 47-49 Thurloe Square Investments Limited | London | 2008 |
| 4755AS Limited | Birmingham | 2018 |
| 4791 Ltd | London | 2017 |
| 48 Anson Road Management Company Limited | London | 2011 |
| 48 Balcombe Street (Freehold) Ltd | Winchester | 2015 |
| 48 Dragon View Harrogate Ltd | Harrogate | 2015 |
| 48 High Street Management Company Limited | High Peak | 2008 |
| 48 Thicket Road Management Limited | London | 2000 |
| 48 Westbourne Gardens Limited | London | 2001 |
| 48-49 North Street Taunton Limited | London | 2019 |
| 484 Consultancy Limited | London | 2023 |
| 48HOURGUIDE.COM Limited | Preston | 2021 |
| 49 Dartmouth Park Road Management Limited | | 2002 |
| 49 DS Limited | Farnham | 2005 |
| 49 Headstone Road Management Ltd | Harrow | 2015 |
| 49 Lenham Road Management Ltd | Surrey | 2004 |
| 491 Media Limited | London | 2014 |
| 494 Consulting Ltd | London | 2016 |
| 4950 Direct Limited | Chester | 2021 |
| 49TH Floor Consulting Limited | Reading | 2017 |
| 4A Solutions Ltd | London | 2016 |
| 4AA Limited | Leicester | 2012 |
| 4ABOXES Ltd | Woodford Green | 2021 |
| 4AC Ltd | Newquay | 2025 |
| 4AD Songs Limited | London | 2013 |
| 4ADVENTURE Holdings Limited | Weymouth | 2013 |
| 4AG Robotics (UK) Limited | London | 2025 |
| 4AGILE Solutions Ltd | London | 2019 |
| 4ALLSEASONS Gardening Limited | Chatham | 2022 |
| 4ATP Ltd | Wirral | 2025 |
| 4AYAS Ltd | Gravesend | 2026 |
| 4B Industries Limited | Warwickshire, | 2004 |
| 4B Packaging Limited | Uckfield | 2023 |
| 4B Team Limited | Morden | 2018 |
| 4BARSREST.COM Limited | Torfaen | 2002 |
| 4BB Limited | Manchester | 2018 |
| 4BD Service Ltd | Dartford | 2021 |
| 4BERRI Consulting Ltd | Warrington | 2007 |
| 4BIO Company Secretarial Services Ltd | London | 2022 |
| 4BK Agency Limited | Birmingham | 2024 |
| 4BOOKME Concierge Ltd | London | 2025 |
| 4C Biomed Finance Ltd | London | 2021 |
| 4C Business Academy Ltd | Chesterfield | 2025 |
| 4C Cleaning Ltd | Teddington | 2017 |