| 20-22 Fore Street Ltd | Real estate | 2019 |
| 22 George Street Limited | Households | 2016 |
| 31 Oakley Street Management Limited | Households | 1981 |
| 3MS Property Limited | Real estate | 2011 |
| 54-56 Torbay Road Limited | Real estate | 2019 |
| A Fenton & Co Ltd | Wholesale & retail | 2024 |
| A J Cane Painting & Decorating Specialists Limited | Construction | 2003 |
| A S P Murphy Brickwork Contractors Ltd | Construction | 1997 |
| A&M Property Associates Ltd | Real estate | 2025 |
| A-Drain Service UK Ltd | Construction | 2008 |
| AA Reading Metal Recycling Limited | Wholesale & retail | 2014 |
| Abbeycrown Systems Limited | Information & communication | 1994 |
| Access & Security Systems Limited | Wholesale & retail | 1995 |
| Access Finance Limited | Financial services | 2017 |
| Access Forex Concierge Ltd | Administrative & support | 2021 |
| Access World Limited | Wholesale & retail | 2023 |
| Acoustic Nations Limited | Information & communication | 2010 |
| Additae Artes Limited | Professional & scientific | 2018 |
| Aerotrim Special Projects Limited | Professional & scientific | 2012 |
| Aesthetics Beauty Development Ltd | Education | 2023 |
| Air Conditioning Concepts Limited | Administrative & support | 2009 |
| AKA Property Group Ltd | Real estate | 2020 |
| AKA Tech Solutions Limited | Information & communication | 2009 |
| Allen Associates IT Limited | Information & communication | 2018 |
| Alpine Associates Limited | Professional & scientific | 2016 |
| Alsford Management Limited | Real estate | 1996 |
| Alteris Search Limited | Administrative & support | 2017 |
| Amazon Cases Ltd | Professional & scientific | 2005 |
| Amberwood Designs Limited | Construction | 2008 |
| Amberwood Guardian Roofs Limited | Construction | 2016 |
| Amberwood Home Improvements Limited | Extraterritorial | 2008 |
| Amblefield Court Management Ltd | Households | 2024 |
| AMC Financial Consulting Limited | Professional & scientific | 2016 |
| Amitec Maintenance Ltd | Construction | 2011 |
| Apex Development Services Limited | Construction | 2007 |
| APH Newbury Limited | Construction | 2020 |
| Aracaris Trading Limited | Professional & scientific | 2015 |
| Ardmore Consulting Limited | Professional & scientific | 2012 |
| Arum Estates Limited | Agriculture & fishing | 2010 |
| Arum Solutions Limited | Financial services | 2015 |
| Arum Tree Services Limited | Extraterritorial | 2015 |
| Ascenda (Europe) Limited | Wholesale & retail | 2017 |
| Atfs Consulting Limited | Information & communication | 2020 |
| Atlas Fire Protection Limited | Wholesale & retail | 2003 |
| Atoz Procurement Services Ltd | Professional & scientific | 2023 |
| AU Natural Limited | Wholesale & retail | 2012 |
| Avason Estimating Ltd | Professional & scientific | 2024 |
| Avonstadt Associates Limited | Wholesale & retail | 1978 |
| B N Fencing Limited | Administrative & support | 2018 |
| BACK2BACK Printwear Ltd | Wholesale & retail | 2019 |
| Baker Jones Holdings Ltd | Financial services | 2019 |
| Beaconsfield Town Academy Ltd | Education | 2021 |
| Bedford Coding Ltd | Information & communication | 2018 |
| Belgravia Square Property Limited | Real estate | 2017 |
| Bella Vista Property Development Ltd | Construction | 2024 |
| Bellavista Developments Ltd | Construction | 2019 |
| Berkeley and Bond Limited | Other services | 2011 |
| Berkshire Roofworks Ltd | Construction | 2026 |
| Berry Marquees Ltd | Arts & recreation | 2004 |
| Bexminster Limited | Agriculture & fishing | 1978 |
| Bikers Discount Store Limited | Wholesale & retail | 2008 |
| Bishopgray Limited | Wholesale & retail | 2014 |
| Bjxv Holdings Ltd | Financial services | 2025 |
| Bjxv Properties Ltd | Real estate | 2025 |
| Bournwood Productions Ltd | Administrative & support | 2026 |
| Brabbin Kitchens & Carpentry Ltd | Construction | 2025 |
| Bracknell Meats Limited | Wholesale & retail | 2013 |
| Brandon Props Limited | Administrative & support | 2016 |
| Brickmatch Inter Limited | Wholesale & retail | 1993 |
| Bridgland Financial Management Holdings Limited | Financial services | 2021 |
| Bridgland Financial Management Limited | Financial services | 2006 |
| Brighterspace Properties Ltd | Construction | 2021 |
| Bulldog Cases Limited | Professional & scientific | 1992 |
| Business to Business (Office Systems) PLC | Wholesale & retail | 1985 |
| BW Agricultural Services Ltd | Manufacturing | 2021 |
| C C Business Mechanics Ltd | Financial services | 2020 |
| C R Flight Hire Limited | Administrative & support | 2016 |
| Cage Limited | Professional & scientific | 1996 |
| Candover Consulting Limited | Professional & scientific | 2006 |
| Car-Tech Ltd | Wholesale & retail | 2003 |
| Caremonitorsuk.Com Ltd | Wholesale & retail | 2021 |
| Catalytic Solutions International Limited | Information & communication | 2022 |
| Cavu Property Developments Limited | Construction | 2011 |
| Central Southern Excavations Ltd | Administrative & support | 2019 |
| Chute Developments Ltd | Construction | 2025 |
| Circle Logistic Services Limited | Transport & logistics | 2008 |
| Clifford Crabtree Consultancy Limited | Professional & scientific | 2013 |
| Clift Legal Services Ltd | Professional & scientific | 2024 |
| Cliftonwood Limited | Households | 2017 |
| Cloud Cauldron Limited | Information & communication | 2017 |
| Combat Pest Solutions Ltd | Other services | 2018 |
| Construct Refurb Maintain Ltd | Information & communication | 2017 |
| Cool Portable Air Conditioning Limited | Extraterritorial | 2012 |
| Copernicus Consulting Ltd | Administrative & support | 2009 |
| Coppertops House Management Company Limited | Real estate | 2019 |
| Countryside MGT Consultancy Services Ltd | Professional & scientific | 2016 |
| Courtfield Medical Group Limited | Financial services | 2023 |
| Cratos Holding (England) Limited | Financial services | 2024 |
| Creations (Bathroom & Wetrooms) Limited | Construction | 2012 |
| CUE AV Limited | Administrative & support | 2014 |