| Ball Europe Limited | Professional & scientific | 2002 |
| Ball UK Holdings, Ltd | Professional & scientific | 2002 |
| Ball UK Investments Limited | Professional & scientific | 2016 |
| Barton Supplies Limited | Wholesale & retail | 2004 |
| Baxter Hart & Abraham Limited | Manufacturing | 1956 |
| Bear Sheet Metal Limited | Manufacturing | 1998 |
| Beauty Hair and Cosmetics (Bedford) Ltd | Wholesale & retail | 2025 |
| Beckett House (Bedford) Limited | Households | 1978 |
| Bedford Airport Limited | Extraterritorial | 1991 |
| Bedford Consulting Limited | Professional & scientific | 1996 |
| Bedford Educational Association | Real estate | 1920 |
| Bedford Motor Services Limited | Extraterritorial | 2005 |
| Bedford School Foundation | Education | 2002 |
| Bedford School Foundation Trust | Education | 2002 |
| Bedfordia Developments Limited | Real estate | 1962 |
| Bedfordia Farms Limited | Agriculture & fishing | 1958 |
| Bedfordia Group Limited | Professional & scientific | 1959 |
| Bedfordia Plant Limited | Extraterritorial | 1957 |
| Bedfordia Properties Limited | Extraterritorial | 1964 |
| Bedgro Limited | Extraterritorial | 1993 |
| Beegoes Limited | Wholesale & retail | 2003 |
| Bellevue Garage Limited | Wholesale & retail | 1998 |
| Bellini's Limited | Hospitality | 2007 |
| Biddenham Asset Finance Limited | Extraterritorial | 1959 |
| Bidwell New Homes Ltd | Construction | 2024 |
| Big 10 Ltd | Administrative & support | 2017 |
| Biogen (UK) Limited | Energy | 2005 |
| Biogen Bryn Pica Limited | Energy | 2011 |
| Biogen Gwyriad Limited | Energy | 2011 |
| Biogen Waen Limited | Energy | 2011 |
| Birch Motors Limited | Wholesale & retail | 2002 |
| Birdee Infotech Ltd | Information & communication | 2022 |
| Birdee Property Ltd | Real estate | 2021 |
| Bismillah Property Ltd | Real estate | 2018 |
| Bitesize Learning Limited | Administrative & support | 2005 |
| Blackcupid.Co.Uk Limited | Other services | 2000 |
| Blackstone Services(Uk) Limited | Wholesale & retail | 2007 |
| Bluefinity Events Ltd | Professional & scientific | 2005 |
| Body Conditioning Limited | Other services | 2003 |
| Boon & Lane Limited | Manufacturing | 1966 |
| Boosst EOT Limited | Administrative & support | 2024 |
| Bostock Healthcare Limited | Other services | 2003 |
| Bourns (UK) Acquisition Limited | Professional & scientific | 2000 |
| Bourns Electronics Limited | Wholesale & retail | 1965 |
| Bourns Limited | Manufacturing | 1995 |
| Box Food Guru Ltd | Extraterritorial | 2023 |
| Brennan School of Dance Limited | Education | 2007 |
| Brett Investment Group Ltd | Professional & scientific | 1995 |
| Bridge Business Limited | Professional & scientific | 2003 |
| Brigham Trustees Limited | Professional & scientific | 2002 |
| Brite Signs Limited | Professional & scientific | 2007 |
| Brite Sparks Auto Electrical Limited | Wholesale & retail | 2005 |
| Broadforce Computers Limited | Information & communication | 1993 |
| Broadley-James Limited | Manufacturing | 2000 |
| Brookend Limited | Information & communication | 2000 |
| Buckden Consultants Limited | Education | 1996 |
| Building Advisory Service Limited | Construction | 1992 |
| Bullerwell & Co Limited | Financial services | 2002 |
| Burton and Associates Limited | Professional & scientific | 1993 |
| Business Concept Associates Limited | Financial services | 1997 |
| Busylogic Limited | Real estate | 2000 |
| Buttermilk Close MGT Co Ltd | Households | 2024 |
| C & a Ceilings & Company Limited | | 1976 |
| C & P Environmental Limited | Professional & scientific | 2005 |
| C E Halpin Ltd | Administrative & support | 2021 |
| C. Jackson and Sons (Demolition) Limited | Extraterritorial | 2002 |
| Cafelat International Limited | Manufacturing | 2023 |
| Caldwell Capital Limited | Administrative & support | 2007 |
| Cambcapital Ltd | Other services | 2026 |
| Camerons Newsagent Limited | Wholesale & retail | 2003 |
| Cane Industries (U.K.) Limited(The) | Other services | 1980 |
| Capacity Management Limited | Information & communication | 1998 |
| Capital Ceilings Limited | Wholesale & retail | 1997 |
| Capital Fireplaces Limited | Wholesale & retail | 1998 |
| Cardington Security Services Limited | | 1968 |
| Cardno Ltd | Manufacturing | 2003 |
| Cards and Specialist Services Limited | Administrative & support | 1999 |
| Caremed Assist Limited | Other services | 2025 |
| Careways Limited | Health & social care | 2003 |
| Carpathian Finance Limited | Financial services | 1995 |
| Carpet Plus Limited | Wholesale & retail | 2003 |
| Casa Antonio Equity Holdings Ltd | Financial services | 2024 |
| Casa Antonio Property Ltd | Real estate | 2024 |
| Cashman Hospitality Consulting Ltd. | Professional & scientific | 2007 |
| Cat Driver Training Events Ltd | Education | 2006 |
| Cave Heating Limited | Construction | 2006 |
| Caxton Motor Company Limited | Wholesale & retail | 1983 |
| Cedar Crest Group Limited | Financial services | 2020 |
| Cedars Flats Residents Company Limited | Households | 1987 |
| Central Access Services Limited | Real estate | 2001 |
| Century Close Management Company Limited | Households | 1999 |
| CGT Developments Xxxxvii Limited | Construction | 1997 |
| Challenge (Europe) Limited | Administrative & support | 2003 |
| Cherrington Court Management Company Limited | Households | 1996 |
| Church of GOD in Christ (Calvary) Limited | Other services | 1969 |
| Citispotter Limited | Information & communication | 2019 |
| City Beach Ltd | Other services | 2020 |
| City Global Logistics Limited | Transport & logistics | 2000 |
| Clarendon House Residents' Company Limited | Real estate | 1996 |
| Clarke and Wheeler Limited | Real estate | 1975 |