| 00357286 Limited | | 1939 |
| 07389261 Limited | Extraterritorial | 2010 |
| 117 Waldegrave Road (Management) Limited | Extraterritorial | 1982 |
| 15WRM Limited | Households | 1984 |
| 164 Amyand Park Road (Management) Limited | Households | 1981 |
| 27BC Limited | Information & communication | 2008 |
| 36, the Grove Limited | Real estate | 1986 |
| 6 Grants Avenue Management Limited | Households | 2001 |
| 747 Controls (1979) Limited | | 1979 |
| 91 Whitchurch Lane Residents Management Limited | Professional & scientific | 1984 |
| A&A Capital Management Limited | Real estate | 2006 |
| A.& B.Hanson(Southall)Limited | | 1947 |
| A.P.R. (Cars) Limited | Wholesale & retail | 1964 |
| AB Entrepreneur Ltd | Professional & scientific | 2017 |
| ABA Surveyors Ltd | Professional & scientific | 2006 |
| ABS Properties (London) Limited | Real estate | 2003 |
| Accountancy Professionals (UK) Limited | Information & communication | 2003 |
| Accrete Computers Limited | | 1983 |
| Acute Technology Limited | Information & communication | 2005 |
| Admiral Trading Limited | Wholesale & retail | 1991 |
| Advantage Construction (UK) Ltd | Construction | 2002 |
| Against the Grain Construction Limited | Construction | 2024 |
| Aircare Freight Services Limited | Transport & logistics | 1979 |
| Alaaen Company Ltd | Wholesale & retail | 2025 |
| Albany Support Services Limited | Construction | 2000 |
| Albedo Limited | | 1967 |
| Alsalim Group Ltd | Wholesale & retail | 2024 |
| Alvi Services Limited | Construction | 2022 |
| Ambassador Close (Hounslow) Residents Limited | Households | 1987 |
| Amber Associates Limited | | 1985 |
| Ameerco Ltd | Other services | 2025 |
| Analoguetube Limited | Professional & scientific | 2007 |
| Anglo-Indian Circle Limited | Health & social care | 1981 |
| Anjaneya JD Trader Ltd | Wholesale & retail | 2024 |
| Apollo Eagle Security Limited | Professional & scientific | 1989 |
| Arrow Safety Limited | Information & communication | 1979 |
| Art Jewellers Limited | Real estate | 1986 |
| Asco Marketing Limited | | 1985 |
| AV Home Improvement Services Ltd | Construction | 2015 |
| Avantime Limited | Construction | 2005 |
| B.L. Joshi & Co. Limited | | 1973 |
| Bank Saman (UK) Ltd | | 2006 |
| Barkeep Builders Limited | | 1986 |
| Barrelweb Limited | Real estate | 1984 |
| Basewain Limited | | 1976 |
| BAT Melech UK Limited | Other services | 2011 |
| BBL Properties Limited | Real estate | 2004 |
| Bearfield Nursery Ltd | Education | 2019 |
| Berkas Ltd | Professional & scientific | 2005 |
| Billaze Limited | Wholesale & retail | 1983 |
| Biscuit Town Productions Limited | Information & communication | 2006 |
| Blue Dragon (Management) Limited | Professional & scientific | 1984 |
| Bostock Reinforcement Co. Limited | | 1974 |
| Brancote Limited | | 1978 |
| Brass Coins Limited | Wholesale & retail | 2006 |
| Briers Consultancy Limited | Professional & scientific | 2004 |
| Brotherhood Court Management Limited | Administrative & support | 2003 |
| Budfield Limited | | 1973 |
| Building Evolution Ltd | Information & communication | 2002 |
| Building, Engineering & Construction Management Ltd | Construction | 2011 |
| Burning Bush Apostolic Christian Ministries | Other services | 2004 |
| Business Sales Network Limited | Administrative & support | 2004 |
| Butterfield ROW Management Company Limited | Households | 2001 |
| C.A. Lines Limited | Wholesale & retail | 1961 |
| C.A.T. Construction Limited | | 1990 |
| C.B.S.(Whitton)Limited | Wholesale & retail | 1961 |
| Cablecard Limited | | 1934 |
| Cablehill Limited | Wholesale & retail | 1985 |
| Captain Communicate Ltd | Transport & logistics | 2007 |
| Cardiac Diagnostic Testing Ltd | Health & social care | 2005 |
| Cathie's Kitchen Limited | | 1981 |
| Cherished Events & Flowers Ltd | Wholesale & retail | 2022 |
| Church Avenue Garage Limited | Wholesale & retail | 1962 |
| City and Suburban Investments Limited | Construction | 1958 |
| City Plan Limited | Real estate | 2016 |
| CK Accountancy Services Limited | Professional & scientific | 2003 |
| CL Pharma Consulting Limited | Professional & scientific | 2014 |
| Clive Tocher Remote Systems Limited | Professional & scientific | 2015 |
| Colegrove Limited | | 1979 |
| Colours of Asia Limited | Professional & scientific | 2000 |
| Consultract Design & Build Limited | Professional & scientific | 1984 |
| County Building Constructors (Hertford) Limited | | 1966 |
| Crazy Mutt Films Limited | Information & communication | 2012 |
| Crispy Duck Chinese Restaurant Limited | Real estate | 2003 |
| Crownlimit Limited | | 1976 |
| Cyclewise Limited | Wholesale & retail | 2002 |
| D&G Builders UK Ltd | Wholesale & retail | 2007 |
| D. & C. World Travels Limited | | 1976 |
| D. & G. (Coachworks) Limited | Hospitality | 1975 |
| D. Port & Co. Limited | Transport & logistics | 1963 |
| D.J. Foodfare Limited | Wholesale & retail | 1993 |
| D.J.Squire & Co.,Limited | Wholesale & retail | 1936 |
| Dartsure Limited | | 1979 |
| Datasquare Limited | Other services | 2000 |
| Day Group Limited | Manufacturing | 1947 |
| Deltamain Limited | | 1980 |
| Denham Yacht Station Limited | Wholesale & retail | 1969 |
| Dependable Investments Limited | Construction | 1956 |
| Dependable Properties Limited | Construction | 1949 |
| Dexter Moren Architects Limited | Other services | 1992 |