| 37 Abingdon Road Ltd | Administrative & support | 2017 |
| 37 Adelaide Road Limited | Households | 2003 |
| 37 Ainger Road Management Limited | Professional & scientific | 2006 |
| 37 Alexander Street Management Limited | Households | 1991 |
| 37 Alexandra Grove Limited | Households | 1997 |
| 37 Allen Road Freehold Limited | Households | 2018 |
| 37 Alliance Invest Ltd | Real estate | 2025 |
| 37 and 37A Astonville ST Limited | Households | 2012 |
| 37 Anerley Road Freehold Limited | Households | 2016 |
| 37 AQ Merchants Limited | Wholesale & retail | 2018 |
| 37 Askew Crescent Management Limited | Households | 1989 |
| 37 Avenell Road Freehold Limited | Households | 2022 |
| 37 Aylesford Street Freehold Limited | Households | 2015 |
| 37 Aynhoe Road London W14 0QA (Management Company) Limited | Households | 2007 |
| 37 Bedford Limited | Hospitality | 2023 |
| 37 Blackheath Road (Management) Limited | Households | 2003 |
| 37 Bolton Gardens (Freehold) Limited | Real estate | 2016 |
| 37 Bristol Gardens W9 Limited | Households | 2002 |
| 37 Bronsart Road Management Company Limited | Real estate | 2009 |
| 37 Burrard Road (Freehold) Limited | Households | 2017 |
| 37 Cadogan Square Freehold Limited | Households | 2008 |
| 37 Cafe Space Ltd | Hospitality | 2024 |
| 37 Carlton Drive (Management) Company Limited | Households | 1985 |
| 37 Castletown Road (Freehold) Limited | Households | 2012 |
| 37 Cavendish Road Management Limited | Households | 1988 |
| 37 Chetwynd Road Freehold Limited | Households | 2018 |
| 37 Claremont Square Limited | Households | 2013 |
| 37 Clonmel Road SW6 Ltd | Households | 2004 |
| 37 Cobbold Road Limited | Households | 2014 |
| 37 Cornwall Gardens Management Company Limited | Households | 2022 |
| 37 Courtfield Road Limited | Households | 2011 |
| 37 Cppr Management Limited | Households | 2024 |
| 37 Cromwell Road Freehold Limited | Households | 2003 |
| 37 Crossfield Road Limited | Real estate | 1998 |
| 37 Days Global Ltd | Health & social care | 2024 |
| 37 Degrees Limited | Wholesale & retail | 2024 |
| 37 Devonshire Road Limited | Extraterritorial | 2006 |
| 37 Digital Limited | Information & communication | 2020 |
| 37 Durham Freehold Ltd | Real estate | 2023 |
| 37 Eaton Mews North Limited | Real estate | 2011 |
| 37 Eaton Place Limited | Real estate | 1979 |
| 37 Edith Grove Freehold Limited | Households | 2020 |
| 37 Edna Street Limited | Hospitality | 1996 |
| 37 Elmcroft Street Freehold Company Limited | Households | 2021 |
| 37 Fermoy Road Limited | Real estate | 2009 |
| 37 Fieldhouse Road Limited | Households | 2009 |
| 37 Fitzhardinge House Ltd | Real estate | 2026 |
| 37 FMC Ltd | Households | 2020 |
| 37 Fourth Avenue Hove Limited | Households | 1999 |
| 37 Fulham Park Gardens Limited | Real estate | 1984 |
| 37 Gascony RTM Company Ltd | Households | 2023 |
| 37 Gauden Road (Management) Limited | Real estate | 1999 |
| 37 Glenrosa Street Limited | Households | 2023 |
| 37 Gloucester Walk LGF Limited | Real estate | 2025 |
| 37 Goldhurst Management Limited | Households | 1988 |
| 37 Greenside Road Limited | Households | 2000 |
| 37 Gunter Grove RTM Company Limited | Households | 2021 |
| 37 Gunterstone Road (Freehold) Company Limited | Households | 2019 |
| 37 Hallowell Road Ltd | Real estate | 2023 |
| 37 Harvist Road Limited | Households | 2014 |
| 37 Hendham Road Ltd | Households | 2024 |
| 37 High Road RTM Company Limited | Households | 2014 |
| 37 Highbury Park Limited | Professional & scientific | 2010 |
| 37 Hindmans Road Limited | Households | 2015 |
| 37 Holbeach Road Ltd | Extraterritorial | 2010 |
| 37 HR Limited | Professional & scientific | 2026 |
| 37 Inglis Road Freehold Limited | Households | 2002 |
| 37 Josephine Avenue Management Company Limited | Professional & scientific | 1993 |
| 37 KHR Management Limited | Real estate | 2015 |
| 37 Kimber Road Limited | Households | 2006 |
| 37 Kingsmead Road SW2 3HY Limited | Households | 2008 |
| 37 Knightsbridge Ltd | Real estate | 2024 |
| 37 KQ Limited | Real estate | 2020 |
| 37 KS GP Limited | Real estate | 2020 |
| 37 KS Limited Partnership | | 2020 |
| 37 KS Nominee Limited | Financial services | 2020 |
| 37 Lamb's Conduit Street Limited | Households | 1999 |
| 37 Lancaster Grove Garages Limited | Households | 1997 |
| 37 Lancaster Grove Limited | Households | 1991 |
| 37 Lennox Gardens Limited | Households | 1996 |
| 37 Lexham Gardens Limited | Households | 2013 |
| 37 Loftus Road Freehold Management Limited | Households | 2024 |
| 37 Loveridge Road Limited | Real estate | 2014 |
| 37 Lushington Road Limited | Real estate | 2014 |
| 37 Lyncroft Gardens Limited | Real estate | 2025 |
| 37 Maclise Road (Freehold) Limited | Households | 2004 |
| 37 Manor Avenue Limited | Households | 2012 |
| 37 Marlborough Place Freehold Ltd | Households | 2018 |
| 37 Marylands Road Limited | Real estate | 1997 |
| 37 Mildmay Grove North Flat Management Limited | Households | 2007 |
| 37 MS Properties Limited | Households | 2001 |
| 37 Music Limited | Information & communication | 2021 |
| 37 Muswell Avenue (Freehold) Limited | Households | 2012 |
| 37 Newlands Park (Sydenham) RTM Company Limited | Households | 2020 |
| 37 Northdown Street Freehold Limited | Real estate | 2009 |
| 37 Northside (Clapham) Limited | Households | 1995 |
| 37 Oakley Road (NO. 2) Management Limited | Households | 2007 |
| 37 Oakley Street Limited | Real estate | 1998 |
| 37 Onslow Gardens Limited | Real estate | 2003 |
| 37 Onslow Road Freehold Limited | Households | 2013 |