| 53 Stockwell Limited | Southampton | 1990 |
| 53 Tennyson Avenue Management Company Limited | Driffield | 2012 |
| 53 Tetcott Road Management Limited | London | 1995 |
| 53 Trent Road Limited | London | 2011 |
| 53 Upper Clapton Road Limited | 53 Upper Clapton Road | 2006 |
| 53-55 Byrne Road Property Management Ltd | London | 2012 |
| 53/55 Clifton Gardens Limited | London | 1982 |
| 531 Whippendell Road Ltd | Woking | 2019 |
| 532-534 Fishponds Road Bristol Management Company Limited | Bristol | 2006 |
| 533 Lots Road Limited | London | 2025 |
| 535 Battersea Park Limited | London | 2015 |
| 5354 Sipp Limited | London | 2012 |
| 5359 QSM Ltd | Leeds | 2025 |
| 53A Denton Street Ltd | Hove | 2025 |
| 53RD Street Limited | London | 2021 |
| 53SR Askl & Sons Ltd | Birmingham | 2026 |
| 54 Addison Gardens Property Management Company Limited | London | 1992 |
| 54 Allfarthing Lane Limited | Kingston Upon Thames | 2002 |
| 54 Amersham Hill Management Company Ltd | High Wycombe | 2019 |
| 54 and 56 Park Street Bristol Ltd | Bristol | 2021 |
| 54 and 56 Park Street Opco Ltd | Bristol | 2023 |
| 54 Bedford Road Ltd | Aberdeen | 2023 |
| 54 Belsize Avenue Limited | | 2007 |
| 54 Birnham Road Limited | London | 2008 |
| 54 Blenheim Terrace (NW8) Limited | London | 2005 |
| 54 Blomfield Road Limited | London | 1982 |
| 54 Brondesbury Villas Limited | London | 2001 |
| 54 Burrage Place Residents RTM Company Limited | Brentwood | 2015 |
| 54 Callcott Road Estate Management Limited | London | 2002 |
| 54 Catherine Street Management Limited | Somerset | 1991 |
| 54 CGA Ltd | London | 2022 |
| 54 Church Road Holdings Ltd | Surrey | 2024 |
| 54 Collingbourne Road Limited | London | 2010 |
| 54 Cotleigh Road Management Company Limited | London | 2005 |
| 54 Creffield RD Management Ltd | Bedford | 2021 |
| 54 Dennington Park Road Management Company Limited | | 1990 |
| 54 Dhonau Limited | London | 2024 |
| 54 Estates Ltd | London | 2014 |
| 54 Ferme Park Road Freehold Ltd | London | 2023 |
| 54 Folkestone Freeholders Ltd | Orpington | 2023 |
| 54 Forge Ltd | Hendon | 2024 |
| 54 Glengall Road Ltd | London | 2011 |
| 54 Golders Green Ltd | Borehamwood | 2021 |
| 54 Highcroft Villas Limited | Brighton | 2025 |
| 54 KAY Road Management Company Limited | Leighton Buzzard | 2010 |
| 54 Kellet Road Limited | Guildford | 2001 |
| 54 Litchfield Gardens RTM Company Limited | Bushey | 2015 |
| 54 Mapperley Ltd | London | 2024 |
| 54 Mullbery Ltd | London | 2024 |
| 54 Norfolk Road Freehold Limited | London | 2013 |
| 54 North END Road Limited | Middlesex | 2001 |
| 54 North Street Management Company Limited | Settle | 2002 |
| 54 Onslow Gardens Management Limited | | 1996 |
| 54 Parkhill Road Right to Manage Company Limited | London | 2014 |
| 54 Penywern Road (Freehold) Limited | London | 2006 |
| 54 Pont Limited | Wimbledon | 2023 |
| 54 Pont Street Ltd | Newbury | 2018 |
| 54 Portland Villas, Hove Limited | Brighton | 2004 |
| 54 Regent Road Management Company Limited | London | 2007 |
| 54 Ronalds Road Limited | | 2006 |
| 54 Sackville Road (Hove) Limited | Hove | 2011 |
| 54 Sandringham Road Management Limited | London | 2008 |
| 54 South Ealing Road Limited | London | 2023 |
| 54 ST John's Lane (Bristol) Management Company Limited | Bristol | 2008 |
| 54 ST Mary Abbot's Court Ltd | Stanmore | 2024 |
| 54 ST Peter Street Management Company Limited | Tiverton | 2005 |
| 54 ST. Elmo Road W12 Limited | | 2001 |
| 54 Station Road Management Company Limited | London | 2005 |
| 54 Stubbington AVE Freehold Ltd | Calne | 2023 |
| 54 Sutherland Square Limited | | 2006 |
| 54 Trevelyan Road Limited | London | 1996 |
| 54 Upper Grosvenor Road Limited | Crowborough | 2007 |
| 54 Upper Tollington Park Limited | Northwood | 2002 |
| 54 Vale Road Limited | Windsor | 2024 |
| 54 Versailles Gardens Ltd | Hemel Hempstead | 2025 |
| 54 Woodhouse Road Freehold Limited | London | 2019 |
| 54 Woodstock Road Limited | Brighton | 2015 |
| 54-56 Glenhurst Road Ltd | London | 2020 |
| 54-56 Old Street Limited | London | 2014 |
| 54-56 Torbay Road Limited | Aldermaston | 2019 |
| 54-65 Sandpiper Close (Greenhithe) RTM Company Limited | Dartford | 2015 |
| 54/56 Cadogan Square Freehold Limited | Shrewsbury | 2006 |
| 54/56 Grove Hill Road Limited | Cranbrook | 2002 |
| 542 SHR Ltd | London | 2023 |
| 542M Limited | Luton | 2025 |
| 543 Bath Road Brislington Bristol Management Company Limited | Bristol | 2022 |
| 543 Limited | Warwick | 2025 |
| 543 Property Ltd | Macclesfield | 2023 |
| 545 Old York Road Limited | London | 2019 |
| 545 Stapleton Road Management Company Limited | Bristol | 2014 |
| 5456HATHAWAY Limited | London | 2024 |
| 547549 Ltd | London | 2020 |
| 549 Old Kent Road (London) Management Company Limited | London | 1999 |
| 54A Danehurst Street Limited | Guildford | 2008 |
| 54A Poole Road Ltd | Poole | 2024 |
| 54A Tooting High Street Ltd | London | 2024 |
| 54B Axminster Limited | London | 2022 |
| 54B Poole Road Ltd | Poole | 2024 |
| 54BPG RTM Company Limited | London | 2012 |
| 54N Properties Ltd | Pelton | 2023 |