| Audley Mote Management Limited | Real estate | 2007 |
| Audley Redwood Limited | Real estate | 2014 |
| Audley Redwood Management Limited | Real estate | 2015 |
| Audley Scarcroft 1 Rent Company Limited | Other services | 2020 |
| Audley Scarcroft 2 Rent Company Limited | Other services | 2020 |
| Audley Scarcroft Management Limited | Other services | 2020 |
| Audley ST Elphins Limited | Real estate | 2005 |
| Audley ST Elphins Management Limited | Real estate | 2007 |
| Audley ST George's Limited | Real estate | 2007 |
| Audley ST George's Management Limited | Real estate | 2015 |
| Audley Stanbridge Earls Limited | Real estate | 2016 |
| Audley Stanbridge Earls Management Limited | Real estate | 2016 |
| Audley Sunningdale Park Limited | Real estate | 2016 |
| Audley Sunningdale Park Management Limited | Other services | 2019 |
| Audley Sunningdale Park Rent Company Limited | Other services | 2019 |
| Audley Willicombe Limited | Real estate | 2001 |
| Audley Willicombe Management Limited | Real estate | 2007 |
| Audrey Services Ltd | Health & social care | 2024 |
| AUM Care Centres Limited | Real estate | 2004 |
| AUM Petroleum Limited | Wholesale & retail | 2007 |
| Aumkara Ltd | Hospitality | 2020 |
| Auram Design Limited | Professional & scientific | 2003 |
| Austin Marketing Associates Ltd | Professional & scientific | 1992 |
| Authentic Eateries Limited | Hospitality | 2024 |
| Automiles Limited | Wholesale & retail | 2005 |
| Automobiliacollectables Ltd | Wholesale & retail | 2019 |
| Autoshades Ltd | Wholesale & retail | 1998 |
| Autotyres Croydon Ltd | Wholesale & retail | 2007 |
| Autumn Scott Developments Limited | Administrative & support | 2007 |
| Avancier Limited | Information & communication | 2006 |
| Avant Contract Furnishings Limited | Wholesale & retail | 1989 |
| AVC (UK) Ltd | Wholesale & retail | 2007 |
| Avebury Mews Management Company (Number 4) Limited | Households | 2005 |
| Avenue Property Management Limited | Real estate | 2002 |
| Avicenna Membership Services Limited | Administrative & support | 2013 |
| Avionic Services International Ltd | Professional & scientific | 2005 |
| Avionica Ltd | Information & communication | 2007 |
| Avis Property (UK) Limited | Construction | 2007 |
| Avitar Limited | Professional & scientific | 1998 |
| Avitus Limited | Information & communication | 2006 |
| AVN Capital Ltd | Financial services | 2019 |
| AVN Controls Ltd | Professional & scientific | 2019 |
| Avondale Galeria Limited | Professional & scientific | 1997 |
| Avra Greek Cuisine Ltd | Hospitality | 2024 |
| Avsi Limited | Professional & scientific | 1994 |
| AWM Windows Limited | Construction | 2012 |
| Axxis Financial Planning Ltd | Financial services | 2003 |
| Aycliffe Technology Limited | Manufacturing | 1998 |
| Ayeson Properties Ltd | Real estate | 2017 |
| AYU Pearl UK Ltd | Manufacturing | 2026 |
| Ayyaz Homes Limited | Real estate | 2001 |
| Azed & Co Limited | Professional & scientific | 2004 |
| Azedinha Limited | Professional & scientific | 2011 |
| Azmat & Sons Ltd | Wholesale & retail | 2015 |
| B & C (Fibrous Plastering) Limited | Wholesale & retail | 1977 |
| B & M Medicals Limited | Health & social care | 2007 |
| B C Construction Services Limited | Construction | 2003 |
| B M Electrical Limited | Construction | 1996 |
| B R Fencing & SON Limited | Administrative & support | 2007 |
| B&A Land Ltd | Construction | 2024 |
| B&R Living Ltd | Hospitality | 2024 |
| B&V Facades UK Limited | Construction | 2023 |
| B&Z Car Hire Ltd | Transport & logistics | 2021 |
| B'Decked Limited | Other services | 1999 |
| B.& J.Plan-Tech Limited | Professional & scientific | 1972 |
| B.Advisory International Ltd | Administrative & support | 2024 |
| B.C.T.Engineering Limited | Manufacturing | 1971 |
| B.F.A. Electrical Limited | Construction | 1998 |
| B.R.M. Coachworks Limited | Wholesale & retail | 1979 |
| B.T.P. Financial Services Limited | | 1989 |
| B.T.U. (Supplies) Limited | Wholesale & retail | 1957 |
| Babish Limited | Real estate | 2004 |
| Babosh (2005) Limited | Hospitality | 2005 |
| Backbeam Ltd | Information & communication | 2026 |
| Backlash Entertainments Limited | Arts & recreation | 2004 |
| Bagshot Rehab Centre Limited | Health & social care | 2018 |
| Baillie Knowles Partnership LLP | | 2004 |
| Bailworth Properties Limited | Construction | 1975 |
| Baker Sayer Limited | Professional & scientific | 1987 |
| BAL Holdings Limited | Financial services | 2005 |
| Bala Ltd | Professional & scientific | 2006 |
| Balancing ACT Limited | Professional & scientific | 1999 |
| Baldrey & Associates Ltd. | Professional & scientific | 2005 |
| Balka Services Limited | Information & communication | 1996 |
| Ballawappas Limited | Administrative & support | 2002 |
| Balliol Accounting Limited | Information & communication | 2002 |
| Ballyhoo (UK) Limited | Professional & scientific | 2007 |
| Ballyhoo Coaching & Consulting Ltd | Professional & scientific | 2017 |
| Balti Cuisine Limited | Hospitality | 2019 |
| Bandbox Dyers & Cleaners Limited | Wholesale & retail | 1960 |
| Bangsooni Ltd | Manufacturing | 2024 |
| Banquet Gravity DIP Limited | Wholesale & retail | 1975 |
| Banstead Coaches Limited | Transport & logistics | 1959 |
| Barbara Currie School of Yoga Ltd. | Health & social care | 1998 |
| Barbara Thurgood & Co Limited | Health & social care | 2004 |
| Barber LAB Ewell Limited | Other services | 2023 |
| Barbican Computer Services Limited | Information & communication | 1994 |
| Barbican Services Limited | Professional & scientific | 1998 |
| Barble Dove | Education | 2016 |
| Barefoot Trainers Limited | Information & communication | 2005 |