| 44SMR Management Limited | Households | 2023 |
| 44TRADE Limited | Wholesale & retail | 2018 |
| 45 & 45A Ramsay Road Limited | Extraterritorial | 2013 |
| 45 & 45A Ridley Road Limited | Real estate | 2001 |
| 45 & 45A ST Johns Villas Ltd | Real estate | 2004 |
| 45 & 46 Bavent Road (Freehold) Limited | Real estate | 2014 |
| 45 Addison Gardens Limited | Real estate | 2019 |
| 45 Adelaide Road Limited | Professional & scientific | 1993 |
| 45 Adolphus Road Freehold Company Limited | Households | 2005 |
| 45 Agate Road Limited | Households | 2009 |
| 45 Airedale Road Limited | Professional & scientific | 2016 |
| 45 Albert Road RTM Company Limited | Households | 2019 |
| 45 ALL Saints Limited | Hospitality | 2021 |
| 45 Alma Square Limited | Professional & scientific | 1970 |
| 45 and 45A Earlsfield Road RTM Company Limited | Households | 2011 |
| 45 Argyle Street (Freehold) Ltd | Real estate | 2012 |
| 45 Arlesford Road Limited | Households | 2019 |
| 45 Berkeley Square Limited | Hospitality | 2021 |
| 45 Berrymead Gardens Limited | Households | 2019 |
| 45 Birkbeck Grove Ltd | Households | 2018 |
| 45 Blomfield Road Management Limited | Households | 1995 |
| 45 Bolton Gardens (Management) Limited | Households | 1996 |
| 45 Bradgate Road Ltd | Households | 2020 |
| 45 Brayburne Avenue Limited | Real estate | 2007 |
| 45 Broadway Ltd | Hospitality | 2025 |
| 45 Cabul Road Management Company Limited | Households | 2011 |
| 45 Cabul Road RTM Company Limited | Households | 2009 |
| 45 Cadogan Place Management Company Limited | Households | 2004 |
| 45 Cambray Road Freehold Limited | Households | 2021 |
| 45 Carter Street Management Company Limited | Real estate | 2010 |
| 45 CCS Ltd | Real estate | 2018 |
| 45 Chalcot Road (Freehold) Limited | Households | 2021 |
| 45 Churchfield Central Limited | Households | 2020 |
| 45 Citadel Limited | Real estate | 2019 |
| 45 Colvestone Limited | Households | 1997 |
| 45 Connaught Square Freehold Limited | Households | 2010 |
| 45 Crewys Road Property Limited | Real estate | 2016 |
| 45 Cromwell Limited | Real estate | 2017 |
| 45 Degree NE Company Limited | Extraterritorial | 2025 |
| 45 Degrees Construction Ltd | Construction | 2015 |
| 45 Derbyshire Street Ltd | Construction | 2014 |
| 45 Devonia Road Limited | Households | 2003 |
| 45 Digital Ltd. | Professional & scientific | 2016 |
| 45 Dolben Street Limited | Real estate | 2011 |
| 45 Eardley Crescent Limited | Real estate | 2007 |
| 45 Eardley Freehold Ltd | Households | 2020 |
| 45 Eaton Place Limited | Administrative & support | 2010 |
| 45 Elder Avenue Limited | Households | 1996 |
| 45 Endymion Road Limited | Financial services | 2016 |
| 45 Ennismore Avenue Limited | Professional & scientific | 2012 |
| 45 Entertainment Limited | Arts & recreation | 2023 |
| 45 Esmond Road Limited | Real estate | 1997 |
| 45 Evelyn Gardens Freehold Company Limited | Real estate | 2015 |
| 45 Evoke LDN Limited | Real estate | 2019 |
| 45 Finborough Road Management Limited | Households | 1998 |
| 45 Fitzroy Limited | Households | 2005 |
| 45 Fordwych Road Limited | Professional & scientific | 2003 |
| 45 Frognal (Management) Limited | Households | 1975 |
| 45 Glasslyn Road (Freehold) Limited | Households | 2018 |
| 45 Grange Park (Freehold) Limited | Households | 2014 |
| 45 Great Percy Street Freehold Limited | Real estate | 2012 |
| 45 Gunter Grove Limited | Real estate | 2016 |
| 45 Hallmark Limited | Administrative & support | 2014 |
| 45 Hamilton Gardens Limited | Professional & scientific | 1999 |
| 45 Hamilton Terrace RTM Company Limited | Real estate | 2018 |
| 45 Hermon Hill Management Limited | Households | 1985 |
| 45 Hewlett Road Limited | Real estate | 2006 |
| 45 Highbury Hill Freehold Limited | Households | 2016 |
| 45 Hillfield Road RTM Limited | Real estate | 2007 |
| 45 Holland Park Limited | Households | 1992 |
| 45 Holmes Road Limited | Real estate | 2015 |
| 45 Hornsey Lane Gardens Residents Company Limited | Extraterritorial | 1983 |
| 45 Huntsmore House Limited | Real estate | 2019 |
| 45 Ifield Road Management Limited | Households | 1997 |
| 45 Kings Avenue Management Limited | Other services | 2015 |
| 45 Lammas Park Road Limited | Households | 2002 |
| 45 Limes Grove Limited | Households | 2014 |
| 45 Lisson Grove Limited | Households | 2016 |
| 45 Lordship Park Freehold Ltd | Other services | 2023 |
| 45 Lordship Park Ltd | Households | 2020 |
| 45 Lurline Gardens Limited | Households | 2020 |
| 45 Lyndhurst Drive Limited | Real estate | 2015 |
| 45 Maclise Road Management Limited | Households | 2002 |
| 45 Maresfield Gardens (Freehold) Limited | Real estate | 2015 |
| 45 Marlborough Place (Management Company) Limited | Households | 1998 |
| 45 Marylands RTM Company Ltd | Households | 2014 |
| 45 Melina Road Limited | Real estate | 1996 |
| 45 Mowbray Road Management Company Limited | Real estate | 2008 |
| 45 Nassington Road Freehold Limited | Households | 2011 |
| 45 Netherhall Gardens Limited | Professional & scientific | 1997 |
| 45 New Compton Street Improvement Company Limited | Real estate | 2011 |
| 45 Petherton Road Management Limited | Real estate | 2012 |
| 45 Pilgrims Lane London Limited | Real estate | 2015 |
| 45 Pitfield Ltd | Real estate | 2026 |
| 45 Portnall Road RTM Ltd | Real estate | 2024 |
| 45 Priory Road Limited | Construction | 2019 |
| 45 Purves Road Limited | Households | 2009 |
| 45 QEW Management Limited | Households | 2014 |
| 45 Randolph Avenue Limited | Households | 1983 |
| 45 Redan Street Limited | Construction | 2025 |