| 2LM Limited | Information & communication | 2011 |
| 2TRAIN Ltd | Administrative & support | 2008 |
| 4 Gloucester Circus Management Company Limited | Households | 1993 |
| 4VCO Limited | Information & communication | 1997 |
| 58 Marsham Street Management Company Limited | Extraterritorial | 2006 |
| 5TB Estates Limited | Households | 2025 |
| A Davis Construction Limited | Construction | 2014 |
| A G Groundworks Limited | Construction | 2019 |
| A.F.M and Co UK Limited | Wholesale & retail | 2018 |
| Aasecuritas Limited | Administrative & support | 2022 |
| Ace Goods Co. Ltd | Wholesale & retail | 2015 |
| Active Cell Ltd | Professional & scientific | 2017 |
| Active Group Projects Ltd | Construction | 2022 |
| Active Group Scaffolding Ltd | Construction | 2021 |
| Aesthetics Consultancy Group Ltd | Health & social care | 2021 |
| Affordable Bloods Ltd | Health & social care | 2025 |
| AFN Cars Ltd | Wholesale & retail | 2026 |
| Ahmed and Family Properties Limited | Real estate | 2024 |
| AL Noor Investment Group Ltd | Real estate | 2025 |
| Alcemi Energy Limited | Energy | 2019 |
| Alex Jones Funeral Directors Limited | Other services | 1995 |
| Alex’S Workshop Ltd | Wholesale & retail | 2022 |
| Alker Fibre Optic Design Limited | Manufacturing | 2019 |
| Alker Fibre Optic Specialists Limited | Manufacturing | 2003 |
| ALL That Gutters Ltd | Construction | 2022 |
| Allison Commercial Ltd | Administrative & support | 2024 |
| Alowe Limited | Wholesale & retail | 2022 |
| AM UK Consultants Ltd. | Professional & scientific | 1998 |
| Analogiq Limited | Professional & scientific | 2025 |
| Anchor Systems (Europe) Limited | Extraterritorial | 2014 |
| Anchor Systems (International) Limited | Manufacturing | 2000 |
| Anchor Systems Limited | Extraterritorial | 2015 |
| ANU (UK) Foundation | Education | 2007 |
| Aragon Advisory Services Ltd | Financial services | 2017 |
| Ardenrun Estates Limited | Real estate | 1997 |
| Ardingly Inn Ltd | Hospitality | 2025 |
| Ariel Business Information Systems Limited | Information & communication | 2003 |
| Ariel Corporation Limited | Information & communication | 2002 |
| Arman Property Investments Limited | Real estate | 2022 |
| Arturo Consulting Limited | Professional & scientific | 1998 |
| Asad Barber & Tanning Salon Ltd | Health & social care | 2024 |
| ASH Close Road Limited | Households | 2023 |
| ASK Enterprise Food Ltd | Hospitality | 2022 |
| Aspire SAP Ltd | Administrative & support | 2023 |
| Athena Research Consultancy Ltd | Professional & scientific | 2023 |
| Attractions & Facilities Hire Ltd | Transport & logistics | 2019 |
| Aurelia Pictures Ltd. | Information & communication | 2014 |
| Austral Properties LLP | | 2008 |
| Autoaid Engineering Ltd | Professional & scientific | 2023 |
| Autoculture Limited | Wholesale & retail | 2000 |
| Avalon Development Management Ltd | Real estate | 2004 |
| Avalon Management Company Limited | Households | 2007 |
| Avernaco Holdings Limited | Financial services | 2018 |
| Avps Park and Ride Ltd | Transport & logistics | 2025 |
| B Thompson Consulting Ltd | Professional & scientific | 2025 |
| B&E Removals Limited | Transport & logistics | 2004 |
| Bakers Lane Foods Ltd | Wholesale & retail | 2022 |
| Bakers Lane Residents Company Limited | Households | 2003 |
| Balcodeck Limited | Extraterritorial | 2024 |
| Baldry Distribution Limited | Transport & logistics | 2008 |
| Bannisters Croft Limited | Households | 2023 |
| Banoffee Capital Ltd | Manufacturing | 2021 |
| Barker's Restorations Limited | Wholesale & retail | 2006 |
| BD Electrical Services Ltd | Construction | 2020 |
| Beacon Hill Development Limited | Construction | 2026 |
| Beacon Hill Practice Ltd | Professional & scientific | 2013 |
| Beaver Fishery Ltd | Arts & recreation | 2013 |
| Beaver Garden Plants Limited | Extraterritorial | 2000 |
| Bectech Packaging Limited | Administrative & support | 2024 |
| Bengal Lingfield Limited | Hospitality | 2018 |
| Bengal Village Limited | Hospitality | 2020 |
| Bentley Design Solutions Limited | Professional & scientific | 2009 |
| Best Universal Ltd | Extraterritorial | 2018 |
| BG Brothers Barbers Ltd | Other services | 2025 |
| Bikersworld Ltd | Wholesale & retail | 2018 |
| Birkdale Energy Limited | Professional & scientific | 2021 |
| Birman Consultancy Ltd | Professional & scientific | 2024 |
| Bishops Commercial Heating Services Ltd | Construction | 2025 |
| Blackberry Lane (Lingfield) Management Limited | Households | 2022 |
| Blink Research & Consulting Ltd | Professional & scientific | 2010 |
| Bloomin' Arts Limited | Arts & recreation | 2011 |
| Bogra Properties Limited | Real estate | 2025 |
| Bonce Hair LLP | | 2018 |
| Bones Lane Ltd | Construction | 2025 |
| Boult Consulting Limited | Professional & scientific | 2020 |
| Boundala Limited | Hospitality | 2018 |
| Brancaster Pharma Limited | Wholesale & retail | 2012 |
| Brend & Stainthorpe Ltd | Manufacturing | 2012 |
| Brend Build Ltd | Manufacturing | 2015 |
| Bricklands Consultancy Limited | Extraterritorial | 2025 |
| Brickwood Property Limited | Real estate | 2017 |
| British Wildlife Centre Limited | Education | 2026 |
| Bronze Halo Limited | Manufacturing | 2025 |
| Bronze Heart Limited | Manufacturing | 2025 |
| Buzzartists Limited | Arts & recreation | 2026 |
| BWC Wildlife Limited | Arts & recreation | 2008 |
| C & N Medical Limited | Health & social care | 2022 |
| C&R Auto Bodyworx Limited | Wholesale & retail | 2025 |
| CAF Developments Ltd | Real estate | 2024 |
| Calvidini Ltd | Manufacturing | 2006 |