| 4 S (UK) Ltd | Wholesale & retail | 2014 |
| 4 Seas Properties Limited | Real estate | 2019 |
| 40 Ciao Ciao Ltd | Real estate | 2025 |
| 40 Fairmile Avenue RTM Company Ltd | Real estate | 2015 |
| 40 Mulgrave Freeholders Limited | Households | 2018 |
| 40/50 Cressingham Grove (Management Company) Limited | Households | 2002 |
| 40075 Limited | Manufacturing | 2013 |
| 41 Avondale Road Limited | Households | 2023 |
| 42 Bytes Ltd | Information & communication | 2023 |
| 42 Mill Place Kingston RTM Company Limited | Households | 2018 |
| 42 Sherwood Park Road Management Limited | Households | 2000 |
| 42-44 Himley Road Limited | Households | 1998 |
| 42-44 ST. James Road Limited | Households | 2009 |
| 43 Knolly's Road Management Company Limited | Households | 2009 |
| 43 Sherwood Park Road 2022 Limited | Households | 2022 |
| 444 Constructions Ltd | Construction | 2015 |
| 454-456 London Road Ltd | Real estate | 2025 |
| 46 Lenham Road Management Company Limited | Real estate | 2007 |
| 4D Office Furniture Limited | Wholesale & retail | 2000 |
| 4HUMANKIND CIC | Wholesale & retail | 2025 |
| 4K Associates Limited | Arts & recreation | 2008 |
| 4K Builders Ltd | Construction | 2018 |
| 4M Creative Development Limited | Wholesale & retail | 2019 |
| 4SEASON Creation Limited | Information & communication | 2024 |
| 4SIGHT Communications Limited | Information & communication | 2012 |
| 4SM IT Services Ltd | Information & communication | 2026 |
| 5 Western Road Freeholders Limited | Hospitality | 2001 |
| 54XBY Limited | Professional & scientific | 2016 |
| 56 Mulgrave Road Freeholders Limited | Real estate | 2001 |
| 57 Fairview Road Freehold Ltd | Real estate | 2020 |
| 58 Carshalton Grove Limited | Households | 2023 |
| 5DD Limited | Construction | 2025 |
| 5HSN Ltd | Real estate | 2024 |
| 5PPPP Homes Limited | Construction | 2025 |
| 6 South Park Road Management Company Limited | Households | 2016 |
| 60 Sherwood Park Road Limited | Households | 1994 |
| 62 Mulgrave Road Managements Limited | Professional & scientific | 1987 |
| 62/64 Worcester Road Management Company Limited | Hospitality | 2020 |
| 64 Kempshott Road (Streatham) Freehold Limited | Households | 2020 |
| 66 Thicket Road Freehold Limited | Households | 2025 |
| 687 Ltd | Other services | 2021 |
| 6EME Ltd | Wholesale & retail | 2024 |
| 7 Beverley Road Ltd | Real estate | 2025 |
| 7 Delta Ltd | Professional & scientific | 2022 |
| 7 Station Approach (Freehold) Company Limited | Households | 2025 |
| 7 Station Approach RTM Company Ltd | Households | 2020 |
| 70 Benhill Avenue Management Limited | Households | 2013 |
| 70 Egmont Road Freehold Company Ltd | Real estate | 2009 |
| 726SOLUTIONS Ltd | Information & communication | 2026 |
| 73 Albany Road Management Limited | Real estate | 2007 |
| 74TH Academy Ltd | Education | 2025 |
| 7678 Worcester Road Residents Association Limited | Households | 2009 |
| 78 Mulgrave Road Ltd | Households | 2019 |
| 786 Mobile Genie Ltd | Manufacturing | 2021 |
| 8 Continents Ltd | Information & communication | 2007 |
| 8 Sutton Grove Freehold Limited | Households | 2019 |
| 8 Western Road Freeholders Limited | Real estate | 1998 |
| 81 to 83A Beulah Road Limited | Households | 2024 |
| 86 Worcester Road, Maintenance Services Ltd | Households | 1995 |
| 89 Camborne Road Ltd | Households | 1992 |
| 8LOME Living Ltd | Administrative & support | 2025 |
| 8TH Wall Ltd | Information & communication | 2012 |
| 9 Hart Grove SPV Limited | Construction | 2025 |
| 9-12 Saltash Close Company Limited | Real estate | 1997 |
| 900TELECOM Limited | Information & communication | 2010 |
| 925 Services Limited | Professional & scientific | 2002 |
| 99 Norroy Road Limited | Households | 2022 |
| 9SC Freehold Ltd | Financial services | 2025 |
| A & a Builders (LDN) Ltd | Construction | 2012 |
| A & a Builders London Ltd | Construction | 2018 |
| A & a Retail & PO Limited | Wholesale & retail | 2016 |
| A & D Pace Limited | Real estate | 2016 |
| A & I Property Services Ltd | Other services | 2024 |
| A & N Food Supply Ltd | Wholesale & retail | 2017 |
| A & N Luxury Carriages Ltd | Transport & logistics | 2021 |
| A & S Surrey Ltd | Hospitality | 2025 |
| A a (Sutton) Limited | Real estate | 2018 |
| A Cubed Consulting Limited | Professional & scientific | 2014 |
| A Express Food Services Ltd | Hospitality | 2026 |
| A G Joiner & Co Limited | Real estate | 1946 |
| A Gentleman Barber (Tadworth) Ltd | Other services | 2022 |
| A Green Heating Ltd | Construction | 2017 |
| A H S Construction & Design Limited | Construction | 2011 |
| A Human Perspective Ltd | Administrative & support | 2022 |
| A J Carpentry and Construction Ltd | Construction | 2024 |
| A J Gardening Limited | Administrative & support | 2003 |
| A Lifting Solutions Limited | Construction | 2016 |
| A M E Engineering Limited | Manufacturing | 1994 |
| A Perfect Builder Limited | Construction | 2021 |
| A Plus Installations Ltd | Construction | 2018 |
| A S K OFF Licence Limited | Wholesale & retail | 2008 |
| A Samad Real Estate Ltd | Real estate | 2026 |
| A T Nest Ltd | Real estate | 2025 |
| A Team Investments Limited | Real estate | 2007 |
| A Tech Work Ltd | Wholesale & retail | 2023 |
| A to G Music School Limited | Education | 2011 |
| A to Z Packaging Ltd | Wholesale & retail | 2003 |
| A to Z Productions Ltd | Information & communication | 2024 |
| A&A Childcare Ltd | Education | 2023 |
| A&A London Development Ltd | Construction | 2023 |