| 54/56 Battersea High Street Freehold Company Limited | London | 2011 |
| 54/56 Fairlawn Avenue Limited | Chiswick | 2011 |
| 54/56 Upperton Road Management Company Limited | London | 2023 |
| 54/56,CADOGAN Square Management Limited | Shrewsbury | 1966 |
| 543 Old Chester Road RTM Company Limited | Prenton | 2011 |
| 545 Chiswick High Road Limited | London | 1995 |
| 546 / 548 High Road Leyton Limited | London | 2017 |
| 547 Gloucester Road Management Company Limited | Bristol | 1995 |
| 549 Lordship Lane RTM Company Limited | London | 2024 |
| 54C Freehold Ltd | London | 2025 |
| 54HWS Ltd | Dorchester | 2021 |
| 55 & 55A Westborough RD (Freehold) Limited | Westcliff-On-Sea | 2021 |
| 55 Addison Road Limited | Horsham | 2001 |
| 55 Agate Road Limited | London | 2018 |
| 55 Albion Road Ltd | Tunbridge Wells | 2022 |
| 55 Alderney Street Limited | Knutsford | 2007 |
| 55 Alfreton Road RTM Company Ltd | Derby | 2016 |
| 55 Argyle Limited | Pinner | 2023 |
| 55 Ashburnham Road RTM Company Limited | Wadhurst | 2021 |
| 55 Aylesford Street Limited | Arundel | 2007 |
| 55 Bassett Road Limited | London | 2023 |
| 55 Beaconsfield Villas RTM Company Ltd | Brighton | 2024 |
| 55 Beatrice Road Management Company Limited | Ramsgate | 2004 |
| 55 Bedford Street Management Company Limited | Lichfield | 2025 |
| 55 Birdhurst Rise Limited | South Croydon | 1994 |
| 55 Birnam Road Limited | | 2005 |
| 55 Blomfield Road Limited | London | 1983 |
| 55 Boyne Road Management Limited | | 1999 |
| 55 Breakspears Management Ltd | London | 2022 |
| 55 Brighton Road (Purley) Management Limited | Purley | 2009 |
| 55 Brighton Road Residents Ltd | Hooley | 2004 |
| 55 Bromley Road Limited | Bromley | 1988 |
| 55 Brunswick Road Hove Limited | Brighton | 2005 |
| 55 Brunswick Square (Hove) Limited | Hove | 2009 |
| 55 Buckley Road Management Company Limited | London | 1996 |
| 55 Bulwer Road RTM Company Limited | London | 2019 |
| 55 Burrard Road Limited | Great Marlings | 2020 |
| 55 Camden Square Management Company Limited | | 1990 |
| 55 Canynge Road (Management) Company Limited | Bristol | 1991 |
| 55 Carleton Road Management Limited | | 1985 |
| 55 Cathcart Road Management Company Limited | | 1992 |
| 55 Cavendish Road Limited | Gateshead | 2020 |
| 55 Central Hill Management Company Limited | London | 1988 |
| 55 Chester Way Limited | London | 1985 |
| 55 Clarendon Villas Limited | Shoreham-By-Sea | 2015 |
| 55 Cologne Road Residents Association Ltd | London | 2011 |
| 55 Compton Road Freehold Company Limited | London | 2018 |
| 55 Coombe Road Management Company Limited | Surrey | 1999 |
| 55 Cowley Road Littlemore Management Company Limited | Oxford | 2022 |
| 55 Cranbury Road (Freehold) Limited | London | 2013 |
| 55 Cranes Park (Management) Limited | Surrey | 1984 |
| 55 Craven Avenue Limited | London | 2021 |
| 55 Degrees North Limited | Newcastle Upon Tyne | 2002 |
| 55 Deronda Road Limited | | 2003 |
| 55 Disraeli Road Freehold Limited | London | 2015 |
| 55 Ditchling Rise Ltd | Brighton | 2012 |
| 55 Drakefield Road Limited | | 2003 |
| 55 Drayton Gardens Residents Association Limited | London | 1977 |
| 55 Drewstead Road RTM Company Limited | London | 2020 |
| 55 Eardley Crescent Management Company Limited | London | 1994 |
| 55 Eaton Place (Freehold) Limited | London | 2021 |
| 55 Eaton Place Limited | London | 2012 |
| 55 Edith Grove Limited | London | 2008 |
| 55 Fourth Avenue Property Management Company Limited | Colchester | 2007 |
| 55 GEE Street Limited | Portsmouth | 2012 |
| 55 Gloucester Road (Bournemouth) Management Company Limited | Bournemouth | 2019 |
| 55 Goldstone Road RTM Company Ltd | Southwick | 2019 |
| 55 Goldstone Villas Hove Limited | Hove | 2010 |
| 55 Grandison Limited | London | 2014 |
| 55 Granville Park Limited | | 1987 |
| 55 Greencoat Place Ltd | London | 2023 |
| 55 Greencroft Gardens Limited | Bromley | 1993 |
| 55 Gresham Road Management Company Limited | Staines-Upon-Thames | 2006 |
| 55 Gubyon Avenue Limited | | 2000 |
| 55 Gunnersbury Lane Ltd | London | 1996 |
| 55 Gwendwr Road Management Company Limited | London | 1976 |
| 55 Hatton Garden Freehold Limited | Seaton | 2003 |
| 55 Heyford Avenue Limited | Buckinghamshire | 2001 |
| 55 High Street Management Company Ltd | Stroud | 2013 |
| 55 Highbury Park Management Limited | Liverpool | 2004 |
| 55 Hillfield Park Limited | London | 2007 |
| 55 Hillfield Road Limited | London | 2018 |
| 55 Howitt Road Limited | London | 1998 |
| 55 HS Limited | London | 2023 |
| 55 Hubert Grove Limited | London | 2024 |
| 55 Hurstbourne Road Management Limited | London | 2010 |
| 55 Idmiston Road Limited | London | 2006 |
| 55 Ifield Road Management Limited | London | 1997 |
| 55 IVY Crescent Freehold Limited | London | 2026 |
| 55 Kellett Road Management Ltd | London | 2026 |
| 55 Lamont Road Limited | Kingston Upon Thames | 1999 |
| 55 Leander Road Limited | London | 1995 |
| 55 Lichfield Grove Freehold Limited | London | 2025 |
| 55 Longridge Road (Management) Company Limited | Reading | 1979 |
| 55 Lordship Road Residents Company Limited | London | 1982 |
| 55 Lyndhurst Drive Limited | London | 2024 |
| 55 Manor Avenue Freehold Limited | London | 2018 |
| 55 Mapperley Road Limited | Nottingham | 2006 |
| 55 Marmion Road Management Limited | Southsea | 1996 |
| 55 Mitcham Park Management Company Limited | Surrey | 1995 |