| 4SIGHT Trading Ltd | Bognor Regis | 2003 |
| 4SITE Signs and Fabrication Limited | Basildon | 2015 |
| 4T Vocational Training Services Limited | Colne | 2013 |
| 4TF Capital Limited | Henlow | 2024 |
| 4TITE Ltd | Dukinfield | 2024 |
| 4TUNGATES Ltd | London | 2024 |
| 4US Yachting Ltd | London | 2021 |
| 4WARD Haulage Limited | Peterborough | 2025 |
| 4WORX Limited | Leeds | 2021 |
| 4YOURLIFE Ltd | Harrow | 2013 |
| 4YOURSPARES (UK) Ltd | Manchester | 2013 |
| 5 & 6 Cromwell Place (Freehold) Limited | London | 2008 |
| 5 a Day (Nutritious Fast Food) Limited | Birmingham | 2024 |
| 5 and 7 Bridgewater RTM Company Limited | Liverpool | 2019 |
| 5 Anglesea Terrace Limited | St. Leonards-On-Sea | 2006 |
| 5 Brackenbury Gardens Limited | Ledbury | 1998 |
| 5 Dunsmure Road Ltd | London | 2013 |
| 5 Eats Limited | London | 2020 |
| 5 for Silver Limited | Otley | 2013 |
| 5 Goldsmith Road Limited | | 1989 |
| 5 Grittleton Road Limited | London | 1975 |
| 5 Harewood Road Residents Limited | Portsmouth | 2010 |
| 5 Ingram Road Finchley Management Company Limited | Scunthorpe | 2017 |
| 5 Meldon Terrace Management Company Limited | Newcastle Upon Tyne | 2014 |
| 5 Norfolk Road Limited | Bournemouth | 2015 |
| 5 Paper Buildings Limited | London | 2010 |
| 5 Percy Terrace Management Company Limited | Plymouth | 1996 |
| 5 Plato Road Limited | Henley-On-Thames | 2007 |
| 5 Queens Road Management Company Limited | Tunbridge Wells | 1991 |
| 5 Rador Place Management Company Ltd. | Plymouth | 1997 |
| 5 Ripon Road Limited | | 2007 |
| 5 Star Accountants Ltd | London | 2022 |
| 5 Star Conservatories & Windows Limited | Stafford | 2011 |
| 5 Star Golf Holidays Limited | London | 2016 |
| 5 Star Homes Limited | Co Tyrone | 1996 |
| 5 Star Vehicle Valeting Services Ltd | Newtownabbey | 2022 |
| 5 Station Road Residents Association Limited | Middlesex | 1998 |
| 5 Stile Hall Gardens Limited | London | 2011 |
| 5 Telfourd Way Ltd | Redhill | 2013 |
| 5 Times Red Limited | Epsom | 2013 |
| 5 Wilton Street (Plymouth) Limited | Hampshire | 2006 |
| 5 Woodland Way Management Company Limited | Brighton | 2011 |
| 5-8 Abbey Court Limited | Ascot | 2007 |
| 5-8 Jersey Court Residents Limited | Isleworth | 2002 |
| 5-8 Shirley Close "RTM" Company Limited | Worthing | 2010 |
| 50 Cadogan Place Freehold Limited | London | 2004 |
| 50 College Park Close Limited | New Eltham | 2001 |
| 50 Hallam Street Management Company Limited | London | 2010 |
| 50 Holmewood Road Limited | London | 2009 |
| 50 London Road Limited | East Sussex | 2003 |
| 50 Loop Road Management Company Limited | Surrey | 1999 |
| 50 North Limited | St. Leonards-On-Sea | 2002 |
| 50 North Street Plymouth Limited | Plymouth | 1990 |
| 50 Spenser Road Management Limited | | 2001 |
| 50 Steele Road Management Company Limited | London | 2009 |
| 50 Stirling Place RTM Company Limited | Hove | 2024 |
| 50 the Drive (Freehold) Limited | Barkingside | 2014 |
| 50 the Drive RTM Company Limited | Ilford | 2011 |
| 50 Times Sharper Limited | Wakefield | 2009 |
| 50+ Finance Limited | Milton Keynes | 2002 |
| 50-60 Station Road Nominee 1 Limited | London | 2019 |
| 50-60 Station Road Nominee 2 Limited | London | 2019 |
| 50/52 Shield Street Management Company Limited | Newcastle Upon Tyne | 2009 |
| 505 Services Limited | Solihull | 2019 |
| 506 Christchurch Road RTM Company Limited | Broadstone | 2020 |
| 508 Communications Ltd | Lancashire | 1999 |
| 50K Lofts and Extensions Ltd | London | 2024 |
| 50PLUS Fitness Ltd | Chelmsford | 2022 |
| 51 Carnarvon Road Freehold Ltd | London | 1998 |
| 51 Grosvenor Terrace Ltd | London | 2025 |
| 51 Lancaster Road Limited | London | 2008 |
| 51 Malmesbury Road Limited | Wiltshire | 2006 |
| 51 Muswell Hill London Limited | London | 2001 |
| 51 Shakespeare RD Freehold Company Ltd | London | 2017 |
| 51 Southerton Road Limited | Pinner | 2011 |
| 512 (EMA) Limited | Thirsk | 2008 |
| 512 (Sheffield) Limited | Thirsk | 2008 |
| 512 Limited | Thirsk | 2008 |
| 517EPA Limited | Durham | 2014 |
| 51CAR Travel Limited | Salford | 2023 |
| 51UNI Limited | London | 2016 |
| 52 Belgrave Road Management Limited | | 1997 |
| 52 Castle Hill Avenue Limited | Folkestone | 2015 |
| 52 Cranbrook RD (Management Company) Ltd | Exeter | 2005 |
| 52 Cyprus Street Limited | Bethnal Green | 2011 |
| 52 Headland Park Management Co Ltd | Plymouth | 1997 |
| 52 Holdings Limited | Edinburgh | 2026 |
| 52 Russell Road Residents Association Limited | London | 1996 |
| 52 the Causeway Management Company Limited | Bristol | 2010 |
| 52 Upper Richmond Road West (Freehold) Company Limited | London | 2009 |
| 52 Woodview Terrace Management Limited | Bradford | 2011 |
| 52-54 Cordrey Gardens (Freehold) Limited | Croydon | 2000 |
| 52-60 Beresford Gardens Management Company Limited | Shrewsbury | 2018 |
| 53 and 54 Northumberland Crescent Limited | Southend-On-Sea | 2016 |
| 53 Cathcart Road Limited | London | 2023 |
| 53 Chelsham Road Limited | London | 2000 |
| 53 Cotleigh Road Limited | Chelmsford | 1995 |
| 53 Cranhurst Road (Freehold) Limited | London | 2014 |
| 53 Degrees Events Limited | Preston | 2012 |
| 53 Southfield Road Admin Limited | London | 2024 |