| AMC Air Conditioning 2026 Limited | Construction | 2026 |
| AMC Bedford Limited | Real estate | 2014 |
| AMC Chauffeur Services Limited | Transport & logistics | 2017 |
| AMC Interiors Limited | Construction | 2019 |
| AMC Medics Limited | Health & social care | 2024 |
| AME Konsult Limited | Wholesale & retail | 2022 |
| Ameera Construction Services Ltd | Construction | 2018 |
| Amellem Limited | Arts & recreation | 2021 |
| American Laboratory Products in Europe Limited | Manufacturing | 1995 |
| American Nails & Spa 172 Ltd | Other services | 2024 |
| American Pool Hall Limited | Administrative & support | 2024 |
| Amerris Limited | Health & social care | 2019 |
| AMF Services (Bedford) Limited | Manufacturing | 2014 |
| Amia Décor Ltd | Administrative & support | 2025 |
| Amichi Catering Services Ltd | Hospitality | 2024 |
| Amicum Limited | Information & communication | 2009 |
| Amicus Trust Limited | Health & social care | 1974 |
| Amii-Afri Ventures Ltd | Wholesale & retail | 2026 |
| Amirah Property Ltd | Real estate | 2025 |
| Amiyah’S Stack Shack Ltd | Hospitality | 2025 |
| AMJ Electrical Control Limited | Construction | 2020 |
| Amjzs Holding Ltd | Financial services | 2024 |
| AMK Silsoe Limited | Agriculture & fishing | 2019 |
| Amkon Training Limited | Education | 2023 |
| Amkulture Ltd | Wholesale & retail | 2024 |
| AML Contractors Limited | Construction | 2025 |
| Amma Holding Group Ltd | Financial services | 2023 |
| Ammitri Ltd | Construction | 2026 |
| AMO Civil Engineering & Groundworks Limited | Construction | 2022 |
| Amore Cafe 1 Ltd | Hospitality | 2025 |
| Amore Excursions Ltd | Administrative & support | 2023 |
| Amory Holdings Limited | Financial services | 2004 |
| Amos GGW Limited | Construction | 2023 |
| AMP Solutions Ltd | Construction | 2017 |
| Ampa Property Ltd | Real estate | 2025 |
| Ampco (UK) Limited | Administrative & support | 2010 |
| Amplify Business Support Ltd | Administrative & support | 2020 |
| Ampthill & Flitwick Physical Therapy Centre Limited | Other services | 2021 |
| Ampthill 24/7 Limited | Wholesale & retail | 2026 |
| Ampthill Air Conditioning Ltd | Construction | 2026 |
| Ampthill Business Connect Ltd | Administrative & support | 2023 |
| Ampthill Business Park Limited | Real estate | 1989 |
| Ampthill Construction Services Limited | Professional & scientific | 2015 |
| Ampthill Developments Limited | Real estate | 2022 |
| Ampthill Fish Bar Ltd | Hospitality | 2019 |
| Ampthill Flooring Limited | Construction | 2024 |
| Ampthill Music CIC | Arts & recreation | 2024 |
| Ampthill Park Management Company Ltd | Real estate | 2014 |
| Ampthill Road Garage Ltd | Wholesale & retail | 2020 |
| Ampthill Spice Ltd | Hospitality | 2017 |
| Ampthill Sports Ground Limited | Real estate | 2011 |
| Ampthill Street (Bedford) Ltd | Real estate | 2019 |
| Ampthill Trading Ltd | Wholesale & retail | 2020 |
| Ampthill Vehicle Services Limited | Wholesale & retail | 2014 |
| Ampthill Vinoteca Ltd | Wholesale & retail | 2023 |
| Ampthill Wine Merchants Limited | Wholesale & retail | 2009 |
| Amrick Singh Property Limited | Construction | 2017 |
| Amryn Ltd | Administrative & support | 2026 |
| AMS Automotive Mechanical Services Limited | Wholesale & retail | 2013 |
| AMS IT Support Ltd | Information & communication | 2021 |
| AMS Property Services London Limited | Real estate | 2026 |
| AMS Quality Ltd | Wholesale & retail | 2023 |
| Amtec Electrical and Facilities Services Ltd | Construction | 2020 |
| Amtv Limited | Information & communication | 2011 |
| AMV Electrics Limited | Construction | 2025 |
| Amweb Consulting Ltd | Professional & scientific | 2022 |
| AMY Fish Colour Limited | Other services | 2019 |
| AMY Revill Ltd | Financial services | 2025 |
| Amybrooks Limited | Administrative & support | 2025 |
| AN Decorators Ltd | Construction | 2026 |
| AN Honest Mechanic Ltd | Wholesale & retail | 2025 |
| AN Informed Place Ltd | Professional & scientific | 2025 |
| Anaerobic Digestion Asset Maintenance (Adam) Limited | Extraterritorial | 2023 |
| Analytical Hub Limited | Professional & scientific | 2026 |
| Analytics Training Limited | Information & communication | 2022 |
| Ananda Arts | Arts & recreation | 2018 |
| Anastasia's Eden Ltd | Administrative & support | 2022 |
| Anatoli Ltd | Construction | 2019 |
| Anatomy and Physiology Online Courses Ltd | Education | 2020 |
| Anav Logistics Ltd | Transport & logistics | 2019 |
| Ancaville Limited | Real estate | 1986 |
| Ancell Limited | Information & communication | 2020 |
| Anchor BD Reatil Ltd | Hospitality | 2023 |
| AND Beyond Labs Limited | Professional & scientific | 2018 |
| AND Systems Limited | Information & communication | 2025 |
| Anderson Lambert (Europe) Limited | Professional & scientific | 1992 |
| Anderson Lambert Corporate Limited | Professional & scientific | 2019 |
| Anderson Roofing (ST Albans) Limited | Construction | 2013 |
| Andersons Farm & Nursery Limited | Wholesale & retail | 2015 |
| Andicia Healthcare Services Limited | Health & social care | 2014 |
| Andover Financial Planning Ltd | Financial services | 2001 |
| Andreea Laser Studio Ltd | Other services | 2025 |
| ANDREI06 Ltd | Transport & logistics | 2025 |
| Andreica Holdings Ltd | Administrative & support | 2025 |
| Andrew Brothers Advisory Ltd | Professional & scientific | 2025 |
| Andrew Charles Hairdressing Ltd | Other services | 2009 |
| Andrew Davie Limited | Hospitality | 2012 |
| Andrew Johnson Specialist Flooring Limited | Construction | 2018 |
| Andrew Reynolds Mortgages Ltd | Financial services | 2018 |
| Andrew Sexton Heating Ltd | Construction | 2018 |