| Andy Biggar Photography Limited | Professional & scientific | 2016 |
| Anglo Chinese Golf Management Limited | Arts & recreation | 2019 |
| Anivet Direct.Com Ltd | Extraterritorial | 2009 |
| ANN Bebbington Limited | Health & social care | 2016 |
| Annie Catering Limited | Hospitality | 2024 |
| Anthony Condon Showjumping Limited | Arts & recreation | 2011 |
| Apex Plumbing and Heating Limited | Construction | 2019 |
| Arctic Coast Ltd | Other services | 2022 |
| Ares Tuning Limited | Wholesale & retail | 2020 |
| Arithmetic Solutions Ltd | Professional & scientific | 2024 |
| Arpita Chakraborty Limited | Health & social care | 2023 |
| ASH Paddock Homes Limited | Health & social care | 1988 |
| Ashbrook Golf Zone Ltd | Arts & recreation | 2024 |
| Ashmore Property and Estates Ltd | Real estate | 2025 |
| ASJ Roofing Contractors Ltd | Construction | 2024 |
| Askari Marketing Limited | Administrative & support | 2008 |
| Aspire Legal Group Limited | Professional & scientific | 2017 |
| Aspley Propco Limited | Real estate | 2025 |
| Astar Homecare Services Limited | Health & social care | 2017 |
| Aston House Way Management Company Limited | Households | 2023 |
| Astonishing Designs Ltd | Administrative & support | 1998 |
| Astrotanks Ltd | Manufacturing | 2017 |
| ATG Cars Ltd | Wholesale & retail | 2022 |
| Athol House Investments Ltd | Professional & scientific | 2023 |
| Atlantic Activities Ltd | Real estate | 1999 |
| Audencis Ltd | Information & communication | 2010 |
| Austin Foot Ecology Consultancy Ltd | Professional & scientific | 2025 |
| Austin Foot Ecology LLP | | 2014 |
| Automated Cutting Room Services Limited | Manufacturing | 1997 |
| Aviationsec Limited | Professional & scientific | 2012 |
| Avivet Limited | Extraterritorial | 1999 |
| AVS21 Ltd | Health & social care | 2022 |
| Awan Auto Services Limited | Wholesale & retail | 2025 |
| B.M. Injection Limited | Manufacturing | 1995 |
| Bang Communications Limited | Information & communication | 1991 |
| Banus Villas Limited | Real estate | 2014 |
| Barca Holdings Limited | Professional & scientific | 2016 |
| Bardo Solutions & Associates Ltd | Professional & scientific | 2020 |
| Bargain World Whitchurch Ltd | Wholesale & retail | 2025 |
| Barker Architects Limited | Professional & scientific | 2025 |
| Barker Property Sourcing Ltd | Real estate | 2023 |
| Barkers Paddock Limited | Agriculture & fishing | 2021 |
| Barretts Consultancy Limited | Professional & scientific | 2020 |
| Barrow (Whitchurch) Limited | Information & communication | 2015 |
| Base Business Solutions Ltd | Information & communication | 2024 |
| Batemann Architectural Design Ltd | Professional & scientific | 2024 |
| BCR Investments Ltd | Real estate | 2018 |
| Beach View Holidays Limited | Real estate | 2025 |
| Bearded Boatman Ltd | Information & communication | 2022 |
| Beat Food Group Limited | Professional & scientific | 2019 |
| Beat Foods Ltd | Wholesale & retail | 2017 |
| Beat Rush Ltd. | Wholesale & retail | 2019 |
| Beau Tiling Ltd | Construction | 2020 |
| Belmey Industrial Supplies Limited | Wholesale & retail | 1995 |
| Belton Cheese Limited | Professional & scientific | 2016 |
| Belton Farm Group Limited | Financial services | 2013 |
| Belton Farm Trading Limited | Agriculture & fishing | 2013 |
| Belton Packing & Logistics Limited | Administrative & support | 2018 |
| Bensons Travel Ltd | Transport & logistics | 2013 |
| Berwick Close Estate Management Limited | Households | 2021 |
| Berwyn View Management Limited | Households | 2017 |
| Better Choice Roofing and Building Ltd | Construction | 2021 |
| Better Home Products (UK) Co Ltd | Wholesale & retail | 2009 |
| Bettisfield Old Stables Yard Management Limited | Households | 2012 |
| Bettys Mini Doodles Ltd | Agriculture & fishing | 2019 |
| Bevrow Ltd | Wholesale & retail | 2021 |
| BFG 2021 Limited | Wholesale & retail | 2021 |
| Bicester House Limited | Hospitality | 1979 |
| Billed Ltd | Construction | 2023 |
| Birch Property Maintenance Ltd | Construction | 2003 |
| Birds Homes Ltd | Real estate | 2025 |
| Birtley Homes Ltd | Construction | 2021 |
| Bized Projects CIC | Administrative & support | 2021 |
| Bjelin UK Ltd | Wholesale & retail | 2022 |
| Black Horse Mischief Limited | Extraterritorial | 2017 |
| Blacka Acoustics Limited | Manufacturing | 2000 |
| Blacka Cases Limited | Extraterritorial | 2010 |
| Blacka Group Limited | Extraterritorial | 2014 |
| Blacka Hire Limited | Extraterritorial | 2014 |
| Blacka Installations Limited | Extraterritorial | 2014 |
| Blackberry Fair Community Interest Company | Arts & recreation | 2009 |
| Blair Aerospace & Helicopter Maintenance & Support Ltd | Manufacturing | 2026 |
| Blakemere Lodges Limited | Wholesale & retail | 2014 |
| Bloore Property Limited | Real estate | 2024 |
| Bloswood Allotments Limited | Other services | 2019 |
| Blue Ginger Whitchurch Ltd | Hospitality | 2022 |
| Blue Jupiter Limited | Financial services | 2007 |
| Blue Skies Occupational Health Ltd | Health & social care | 2020 |
| Bluefire Services Ltd | Professional & scientific | 2019 |
| BMC TD Limited | Real estate | 2017 |
| Boedun GSE Consultants Limited | Transport & logistics | 2003 |
| Boost of Whitchurch Limited | Other services | 2025 |
| Border Bars and Marquees Limited | Administrative & support | 2010 |
| Border Retreats Ltd | Real estate | 2025 |
| Border Vision Limited | Agriculture & fishing | 2023 |
| Boscombe Reef Retreat LLP | | 2009 |
| Boundless Interiors Limited | Wholesale & retail | 2020 |
| Bowie Painting Contractors Limited | Construction | 2007 |
| Bradbury Care Centre Limited | Health & social care | 2014 |
| Bradeley Green Limited | Extraterritorial | 1993 |