| 4 Brothers Brickwork Limited | Construction | 2023 |
| 4 Brothers Cela Ltd | Construction | 2020 |
| 4 Brothers Logistics Ltd | Wholesale & retail | 2024 |
| 4 Brothers Mobile Shop Ltd | Wholesale & retail | 2026 |
| 4 Brunswick Gardens Freehold Limited | Households | 2022 |
| 4 Brunswick Park RTM Company Limited | Households | 2006 |
| 4 Buckleigh Road Tenants Association Limited | Real estate | 2001 |
| 4 C'S Investments Limited | Real estate | 2016 |
| 4 C'S Property Limited | Real estate | 2018 |
| 4 Campden Hill Gardens RTM Company Limited | Real estate | 2025 |
| 4 Canford Road, SW11 Limited | Real estate | 1990 |
| 4 Carisbrooke RD FH Ltd | Real estate | 2025 |
| 4 Castle Mews (Freehold) Limited | Other services | 2015 |
| 4 Cavendish Square Limited | Real estate | 2017 |
| 4 Challoner Street Limited | Extraterritorial | 2004 |
| 4 Chancellor Grove Freehold Limited | Households | 2014 |
| 4 Charity Foundation | Administrative & support | 1999 |
| 4 Charlwood Place Freehold Limited | Households | 2017 |
| 4 Chelsea Embankment RTM Company Limited | Households | 2016 |
| 4 Cheniston Gardens Limited | Real estate | 2019 |
| 4 Chesterford Gardens Management Company Limited | Households | 2007 |
| 4 Cheval Place Ltd | Real estate | 2026 |
| 4 Chubs Limited | Information & communication | 2019 |
| 4 Church Lodge Limited | Real estate | 2016 |
| 4 Churchmead Management Limited | Households | 2000 |
| 4 Circle Support Ltd | Health & social care | 2025 |
| 4 Clarendon Road Limited | Households | 2002 |
| 4 Clarendon Street (Management) Limited | Households | 2002 |
| 4 Cleveland Square Limited | Households | 2004 |
| 4 Codrington Road RTM Company Limited | Households | 2006 |
| 4 Colebrooke ROW Property Management Limited | Households | 2003 |
| 4 Colour Theorem Ltd | Information & communication | 2016 |
| 4 Concanon Road RTM Company Ltd | Administrative & support | 2016 |
| 4 Consultancy Services Ltd | Professional & scientific | 2018 |
| 4 Corner Academy Ltd | Arts & recreation | 2019 |
| 4 Corners Consultancy Ltd | Professional & scientific | 2026 |
| 4 Corners Images Limited | Professional & scientific | 2004 |
| 4 Corners Relocation Ltd | Transport & logistics | 2015 |
| 4 Cornwall G Ltd | Real estate | 2026 |
| 4 Cough Limited | Professional & scientific | 2001 |
| 4 Courtfield Gardens Freehold Limited | Real estate | 2015 |
| 4 Cresco Ltd | Real estate | 2026 |
| 4 Crockerton Road RTM Company Ltd | Households | 2015 |
| 4 Cromwell Crescent Limited | Households | 2013 |
| 4 Cyber Ltd | Information & communication | 2021 |
| 4 Dartmouth Road Freehold Ltd | Real estate | 2018 |
| 4 Data Solutions Limited | Information & communication | 2020 |
| 4 Day Week Foundation Ltd | Other services | 2022 |
| 4 Dealer Logistics Ltd | Wholesale & retail | 2026 |
| 4 Dempster Road Management Company Limited | Households | 2005 |
| 4 Denning Road Management Company Limited | Hospitality | 1998 |
| 4 Design Studio Ltd | Professional & scientific | 2024 |
| 4 Digital Media Ltd | Administrative & support | 2007 |
| 4 Digital Media UK Ltd | Administrative & support | 2009 |
| 4 Dimensional Fitness Limited | Arts & recreation | 1999 |
| 4 Donovan Property Holdings Ltd | Households | 2026 |
| 4 Drayton Road (Freehold) Limited | Real estate | 2021 |
| 4 Drive Recruitment Ltd | Administrative & support | 2024 |
| 4 Duckett Road (Freehold) Limited | Other services | 2012 |
| 4 Dulwich Road Limited | Hospitality | 2003 |
| 4 Dymock Street Freehold Limited | Households | 2022 |
| 4 Eastern Ltd | Hospitality | 2026 |
| 4 Egerton Gardens Freehold Limited | Real estate | 2015 |
| 4 Egerton Place Limited | Households | 2004 |
| 4 Elsworthy Terrace (Freehold) Limited | Real estate | 1997 |
| 4 Evelyn Gardens RTM Company Limited | Households | 2012 |
| 4 Every 1 Limited | Wholesale & retail | 2008 |
| 4 Ewelme Road RTM Company Limited | Other services | 2010 |
| 4 Exeter Ltd | Households | 2014 |
| 4 Eyes Capital Limited | Financial services | 2015 |
| 4 Eyes Compliance Solutions Ltd | Professional & scientific | 2024 |
| 4 Fairholme Road Freehold Limited | Households | 2023 |
| 4 Families 404 Ltd | Information & communication | 2023 |
| 4 Fare House Limited | Real estate | 2025 |
| 4 Ferncroft Avenue (Freehold) Ltd. | Real estate | 1999 |
| 4 Filled Ltd | Other services | 2020 |
| 4 Flowers Acupuncture Ltd | Health & social care | 2014 |
| 4 Floyd Road Management Limited | Households | 2015 |
| 4 Found Stays Ltd | Hospitality | 2026 |
| 4 Four 4 Events Ltd | Administrative & support | 2025 |
| 4 Fratello Limited | Hospitality | 2021 |
| 4 Frayswater Limited | Real estate | 2024 |
| 4 Frognal Gardens Management Limited | Households | 2008 |
| 4 Fryerning Lane Ltd | Households | 2021 |
| 4 Futures Limited | Other services | 2009 |
| 4 Futures Phase 1 (Refico) Limited | Financial services | 2022 |
| 4 Futures Phase 1 Holdings Limited | Other services | 2009 |
| 4 Futures Phase 1 Limited | Other services | 2009 |
| 4 Futures Phase 2 (Refico) Limited | Financial services | 2022 |
| 4 Futures Phase 2 Holdings Limited | Administrative & support | 2010 |
| 4 Futures Phase 2 Limited | Administrative & support | 2010 |
| 4 Gales Gardens LON Limited | Administrative & support | 2018 |
| 4 Gazi Limited | Professional & scientific | 2021 |
| 4 Gledstanes Road Limited | Households | 2011 |
| 4 GM Sales Limited | Other services | 2019 |
| 4 Go Enterprise Limited | Information & communication | 2025 |
| 4 Golden Yard Ltd | Real estate | 2015 |
| 4 Grafton Yard Ltd. | Households | 2015 |
| 4 Graham Road Ltd | Households | 2026 |
| 4 Green Finance Ltd | Other services | 2025 |