| 53 Pyrland Road Limited | Real estate | 1999 |
| 53 QG Freehold Limited | Households | 2022 |
| 53 Queens Gardens Management Company Limited | Professional & scientific | 2004 |
| 53 Red Lion Ltd | Hospitality | 2017 |
| 53 Redcliffe Square Management Company Limited | Real estate | 2002 |
| 53 Regina Road Limited | Households | 2004 |
| 53 Roderick Road Limited | Households | 2015 |
| 53 Rosslyn Hill Residents Association Limited | Households | 2004 |
| 53 RYE Road Freehold Ltd | Real estate | 2024 |
| 53 Skylark Ltd | Real estate | 2014 |
| 53 Solutions Limited | Real estate | 2009 |
| 53 Southerton Road Freehold Limited | Households | 2016 |
| 53 Southfield Road Admin Limited | Extraterritorial | 2024 |
| 53 Stanhope Gardens Freehold Company Limited | Households | 2025 |
| 53 Stanlake Road Limited | Households | 2021 |
| 53 Station Road Limited | Real estate | 2006 |
| 53 Sutherland Avenue Residents Limited | Households | 1997 |
| 53 Talbot Road Limited | Households | 2003 |
| 53 Tetcott Road Management Limited | Real estate | 1995 |
| 53 Tollington Way London Limited | Extraterritorial | 2004 |
| 53 Trent Road Limited | Real estate | 2011 |
| 53 Truro Road Management Limited | Households | 2006 |
| 53 Underhill Road Limited | Households | 1998 |
| 53 Wandsworth Bridge Road Limited | Households | 2015 |
| 53 Warrington Crescent Freehold Ltd | Households | 2011 |
| 53 Warrington Group Ltd | Construction | 2026 |
| 53 Warwick Gardens Limited | Households | 2017 |
| 53 WER Ltd | Extraterritorial | 2016 |
| 53-53A Nightingale Lane RTM Company Ltd | Households | 2021 |
| 53-55 Byrne Road Property Management Ltd | Real estate | 2012 |
| 53-55 Stephendale Road Limited | Households | 2014 |
| 53-59 Essendine Mansions Limited | Households | 2007 |
| 53/54 Cornwall Gardens Management Company Limited(The) | Households | 1985 |
| 53/55 Clifton Gardens Limited | Real estate | 1982 |
| 53/55 Earls Court Square Ltd | Households | 2014 |
| 53/59 Belsize Avenue Management Company Limited | Households | 1995 |
| 530 ISH Limited | Wholesale & retail | 2024 |
| 532MEDIA Limited | Professional & scientific | 2020 |
| 533 Garratt Lane Limited | Extraterritorial | 2006 |
| 533 Lots Road Limited | Real estate | 2025 |
| 5335 Ltd | Health & social care | 2026 |
| 5343 Consulting Ltd | Information & communication | 2026 |
| 535 Battersea Park Limited | Real estate | 2015 |
| 535 Multimedia (Overseas) Company Limited | Arts & recreation | 2023 |
| 5354 Sipp Limited | Real estate | 2012 |
| 537 Lordship Lane RTM Company Limited | Households | 2016 |
| 538 Kings Road Limited | Households | 2001 |
| 53AM Salons LLP | | 2007 |
| 53ART Holding Ltd | Professional & scientific | 2022 |
| 53BR Limited | Households | 2022 |
| 53CC Management Company Limited | Households | 2004 |
| 53CM14 Limited | Households | 2025 |
| 53KA Management Limited | Households | 2003 |
| 53NG Limited | Information & communication | 2019 |
| 53RD Street Limited | Real estate | 2021 |
| 53VALLANCEROAD RTM Company Limited | Households | 2026 |
| 54 Aberdare Gardens Limited | Hospitality | 2006 |
| 54 Acre Lane (Freehold) Limited | Households | 2013 |
| 54 Addison Gardens Property Management Company Limited | Real estate | 1992 |
| 54 African Drives Impact CIC | Education | 2026 |
| 54 African Drives Ltd | Other services | 2021 |
| 54 and 56 Hillfield Park Mews RTM Company Limited | Households | 2025 |
| 54 AR Limited | Households | 2022 |
| 54 Askew Crescent Ltd | Households | 2023 |
| 54 Balls Pond Road Freehold Limited | Households | 2023 |
| 54 Barons Court Road Limited | Households | 1994 |
| 54 Bateman Street Residents Association Limited | Households | 2002 |
| 54 Birkbeck Freehold Limited | Households | 2023 |
| 54 Birnham Road Limited | Real estate | 2008 |
| 54 BIT Studios Ltd | Information & communication | 2021 |
| 54 Blenheim Terrace (NW8) Limited | Real estate | 2005 |
| 54 Blomfield Road Limited | Real estate | 1982 |
| 54 Boscombe Road Company Ltd | Households | 2015 |
| 54 Brailsford Road Ltd | Households | 2002 |
| 54 Brondesbury Villas Limited | Real estate | 2001 |
| 54 Callcott Road Estate Management Limited | Real estate | 2002 |
| 54 Camberwell Green Limited | Construction | 2016 |
| 54 CGA Ltd | Real estate | 2022 |
| 54 Charleville Road W14 (Management) Limited | Households | 1995 |
| 54 Church Crescent N10 Management Limited | Households | 1997 |
| 54 Collingbourne Road Limited | Real estate | 2010 |
| 54 Compayne Gardens Management Company Limited | Administrative & support | 2015 |
| 54 Coningham Road Limited | Households | 2014 |
| 54 Convenience Ltd | Wholesale & retail | 2025 |
| 54 Cotleigh Road Management Company Limited | Real estate | 2005 |
| 54 Crediton Hill Management Company Limited | Households | 1995 |
| 54 Cricketfield Road Management Limited | Households | 2006 |
| 54 Culverdon Road Management Company Limited | Households | 2007 |
| 54 Devonshire Road Limited | Administrative & support | 2012 |
| 54 Dhonau Limited | Real estate | 2024 |
| 54 Drewstead Road Management Company Ltd. | Households | 2000 |
| 54 Dulwich Road Limited | Households | 1984 |
| 54 Ellington Street Limited | Households | 1998 |
| 54 Elsenham Street Ltd | Households | 2020 |
| 54 Elsworthy Road Management Limited | Households | 2000 |
| 54 Estates Ltd | Real estate | 2014 |
| 54 Ferme Park Road Freehold Ltd | Real estate | 2023 |
| 54 Fermoy Road Freehold Limited | Households | 2019 |
| 54 Fit Limited | Education | 2025 |
| 54 Glengall Road Ltd | Real estate | 2011 |