| 41-42 Lowndes Square Management Company Limited | Households | 2000 |
| 41-43 Quentin Road Limited | Hospitality | 2000 |
| 41-45 ST James's Street Brighton Limited | Real estate | 2004 |
| 41-47 Old Street Ltd | Real estate | 2026 |
| 41-48 Gertrude Street Limited | Households | 1995 |
| 41-55 Linden Mansions Freehold Limited | Households | 2024 |
| 41/43 Aynhoe Road Freehold Limited | Households | 2006 |
| 41/43 Cadogan Square Freehold Limited | Households | 2006 |
| 41/43 Courtfield Road Management Co. Limited | Households | 1984 |
| 41/43 Gloucester Road Management Company Limited | Households | 2010 |
| 41/43 Munster Road (Fulham) Limited | Households | 1986 |
| 41/53 Goswell Road Residential Management Company Limited | Households | 1999 |
| 41/7 Laleham Avenue Limited | Households | 2000 |
| 410 Hornsey Road Limited | Households | 2023 |
| 4100H Limited | Real estate | 2022 |
| 411 Communications Ltd | Professional & scientific | 2024 |
| 411 Consultancy and Surveying Ltd | Construction | 2021 |
| 411 Data Limited | Information & communication | 2023 |
| 411 Investments Limited | Real estate | 2019 |
| 411 LDN Ltd | Administrative & support | 2024 |
| 411 Ventures Ltd | Information & communication | 2025 |
| 411&CO Limited | Wholesale & retail | 2025 |
| 4119 Holdings Ltd | Financial services | 2025 |
| 411V1111 Limited | Professional & scientific | 2025 |
| 412 Kingston Road Freehold Limited | Households | 2018 |
| 414 Excelsior Works Ltd. | Real estate | 2026 |
| 414 Fulham Palace Management Limited | Households | 2017 |
| 414 Homes Limited | Real estate | 2021 |
| 414-416 Fulham Road Limited | Households | 2004 |
| 414141-204060 Carcabs Ltd | Professional & scientific | 2000 |
| 4142 Ltd | Information & communication | 2025 |
| 415 Archway Freehold Limited | Real estate | 2014 |
| 415 Burnt Oak Broadway Limited | Households | 2017 |
| 415 Palaette Ltd | Hospitality | 2020 |
| 415 Upper Richmond Road Limited | Real estate | 2005 |
| 416 Artists LLP | | 2021 |
| 416 Consulting Ltd | Information & communication | 2018 |
| 416 New Cross Road Limited | Extraterritorial | 2004 |
| 4160 Tuesdays Limited | Manufacturing | 2012 |
| 417 Chiswick High Road Limited | Real estate | 2003 |
| 417 Limited | Education | 2024 |
| 417 Wick Lane (London) Freehold Limited | Real estate | 2023 |
| 417 Wick Lane RTM Company Limited | Households | 2009 |
| 417-425 Finchley Road Management Limited | Other services | 1992 |
| 418 Centennial Park 2018 Limited | Administrative & support | 2018 |
| 418 Data Limited | Information & communication | 2024 |
| 418 Essex Road RTM Company Ltd | Households | 2021 |
| 418 Kingsland Road Ltd | Hospitality | 2025 |
| 418 to 420 Fulham Road Residents' Management Company Limited | Households | 2001 |
| 418SEC Ltd | Information & communication | 2018 |
| 419 Apparel Production Ltd | Other services | 2021 |
| 419STUDIOS Ltd | Arts & recreation | 2019 |
| 41A Church Street Ltd | Real estate | 2023 |
| 41A Cromwell Avenue Limited | Extraterritorial | 1976 |
| 41A Mill Road Ltd | Households | 2014 |
| 41A-41D Belmont Hill RTM Company Ltd | Households | 2020 |
| 41CIRG Future Ltd | Financial services | 2025 |
| 41EC Limited | Real estate | 2026 |
| 41GH Limited | Construction | 2020 |
| 41GP Production Services Limited | Arts & recreation | 2013 |
| 41K Solutions Limited | Information & communication | 2023 |
| 41KGAR Ltd | Households | 2022 |
| 41RIVE Ltd | Information & communication | 2022 |
| 42 & 42A Ferndale Road RTM Company Limited | Households | 2015 |
| 42 - 50 Steele Road Ltd | Real estate | 2025 |
| 42 Aberdare Gardens Limited | Health & social care | 2003 |
| 42 Acres Limited | Hospitality | 2014 |
| 42 Alkham Road Flat Management Limited | Households | 2004 |
| 42 Altenburg Gardens Management Company Limited | Households | 1997 |
| 42 and 43 Cornwall Gardens Management Limited | Households | 1986 |
| 42 and 44 Tooting BEC Road (Freehold) Limited | Real estate | 2007 |
| 42 and Beyond Ltd | Real estate | 2011 |
| 42 Arlingford Road RTM Company Ltd | Administrative & support | 2012 |
| 42 Athelstan Road RTM Company Limited | Households | 2006 |
| 42 Athenaeum Road Limited | Households | 2010 |
| 42 Auckland Road Management Limited | Households | 2018 |
| 42 Avonmore Road Limited | Real estate | 2011 |
| 42 Barclay Road Limited | Households | 2013 |
| 42 Barrow Road Limited | Real estate | 2002 |
| 42 BG Limited | Other services | 2018 |
| 42 Blenheim Crescent Limited | Households | 2004 |
| 42 Blenheim Gardens Management Limited | Households | 2011 |
| 42 BP Limited | Real estate | 2015 |
| 42 Broxash Road Limited | Households | 2008 |
| 42 Brunswick Gardens Limited | Households | 2003 |
| 42 Bruton Limited | Professional & scientific | 2017 |
| 42 Camera & Lighting Limited | Information & communication | 2014 |
| 42 Canfield Gardens (Freehold) Limited | Households | 2017 |
| 42 Capital Limited | Financial services | 2024 |
| 42 Castle Hill Avenue RTM Company Ltd | Households | 2022 |
| 42 Champion Hill Management Company Limited | Households | 1990 |
| 42 Chesterton Road Limited | Households | 1991 |
| 42 Chestnut Road Management Limited | Households | 1992 |
| 42 CHG Freehold Limited | Real estate | 2024 |
| 42 Chobham Road RTM Company Limited | Households | 2013 |
| 42 Christchurch Avenue Management Company Limited | Households | 1999 |
| 42 Church Lane Limited | Households | 2012 |
| 42 Clanricarde Gardens Management Company Limited | Households | 2003 |
| 42 Clarendon Road (Freehold) Limited | Real estate | 2025 |
| 42 Claverton Street Limited | Extraterritorial | 2011 |