| Avatar Games Limited | Manufacturing | 2016 |
| Avatar Sports Bar Limited | Hospitality | 2026 |
| Aveli Studio Ltd | Manufacturing | 2026 |
| Avens Marketing Limited | Professional & scientific | 2023 |
| Aveo Trading Group Ltd | Education | 2019 |
| Avery Financial Services Limited | Financial services | 2004 |
| Aviation Management Limited | Extraterritorial | 2001 |
| Avidanalyst Limited | Information & communication | 2016 |
| Avonline Logistics Limited | Transport & logistics | 2015 |
| Awardforth Limited | Administrative & support | 2001 |
| Awareness Consulting Limited | Information & communication | 2013 |
| Axapetes Ltd | Transport & logistics | 2022 |
| Axedium Ltd | Administrative & support | 2024 |
| AY Senior Ltd | Transport & logistics | 2021 |
| Azera Clothing Limited | Wholesale & retail | 2017 |
| Azherthoem Ltd | Transport & logistics | 2021 |
| Azorina Ltd | Administrative & support | 2022 |
| Aztec Label Limited | Manufacturing | 2007 |
| Aztekium Ltd | Transport & logistics | 2022 |
| Aztreliux Ltd | Administrative & support | 2024 |
| B E Foster Joinery Limited | Construction | 2005 |
| B G Planning Services Ltd | Professional & scientific | 2020 |
| B P G Accounting Limited | Professional & scientific | 2020 |
| B Watkins Traffic Ltd | Construction | 2022 |
| B&F Group UK Limited | Wholesale & retail | 2025 |
| B.C.O Heating and Renewables Ltd | Construction | 2026 |
| B.I.L. Steels Limited | Manufacturing | 1993 |
| B.M.I. Holdings Limited | Professional & scientific | 1995 |
| B1X (Worcs) Limited | Construction | 2017 |
| B24NLG Limited | Wholesale & retail | 2025 |
| BACK2LIFE Kidderminster Limited | Health & social care | 2020 |
| Backbarrow Ltd | Transport & logistics | 2021 |
| Backhousia Ltd | Transport & logistics | 2022 |
| BAD Cat Solutions Ltd | Professional & scientific | 2023 |
| Bagginswood Developments Limited | Construction | 2025 |
| Bagley Buildings Ltd | Real estate | 2019 |
| BAI RUI Investment & Development Management Ltd | Construction | 2015 |
| Baitciux Ltd | Administrative & support | 2024 |
| Balac Automotive Ltd | Transport & logistics | 2017 |
| Bald and Brave Ltd | Wholesale & retail | 2024 |
| Balemax Ltd | Administrative & support | 2024 |
| Ballintuim Ltd | Administrative & support | 2022 |
| Balmoral Equestrian Ltd | Administrative & support | 2018 |
| Balta Floorcovering UK Limited | Manufacturing | 2019 |
| Bamburger Ltd | Hospitality | 2024 |
| Bamotech Ltd | Wholesale & retail | 2022 |
| Banana Bookkeeping Ltd | Professional & scientific | 2022 |
| Bandrake Head Ltd | Transport & logistics | 2021 |
| Bangham Consulting Services Ltd | Information & communication | 2007 |
| Banner's Auto Repairs Limited | Wholesale & retail | 2020 |
| Bare Group Limited | Construction | 2015 |
| Barfi House Ltd | Wholesale & retail | 2023 |
| Bargain Zone Ltd | Wholesale & retail | 2021 |
| Bargtious Ltd | Health & social care | 2024 |
| Barn OWL Place Kidderminster Limited | Administrative & support | 2021 |
| Barnardiston Ltd | Administrative & support | 2022 |
| Barnes Commercial Holdings Ltd | Real estate | 2018 |
| Barrett Legacy Holdings Ltd | Construction | 2025 |
| Barrett Legacy Living Ltd | Real estate | 2025 |
| Barton Firtop Engineering Co Limited | Manufacturing | 1973 |
| Barton Firtop Holdings (UK) Limited | Financial services | 2021 |
| Base Line Engineering Limited | Construction | 2014 |
| Bassam Properties Limited | Real estate | 2022 |
| Bathroom Choice Limited | Wholesale & retail | 2017 |
| Bathrooms to Love Limited | Wholesale & retail | 2015 |
| Battenburg Limited | Real estate | 2022 |
| Bay Switching Solutions Limited | Construction | 2024 |
| Bazirium Ltd | Transport & logistics | 2023 |
| Bazuka Music Ltd | Information & communication | 2023 |
| BB Homes and Properties Ltd | Real estate | 2021 |
| BBI Independent Financial Advisers Limited | Financial services | 2005 |
| BD Industrial Construction Ltd | Manufacturing | 2026 |
| BE Telecommunications Ltd | Information & communication | 2024 |
| Beach Road Management Company (Fairbourne) Limited | Hospitality | 2006 |
| Beacon International Holdings Limited | Financial services | 2019 |
| BEACON999 Ltd. | Information & communication | 2024 |
| Beaconive Ltd | Hospitality | 2023 |
| Beakbane Limited | Manufacturing | 1954 |
| Beakbane Precision Limited | Manufacturing | 2023 |
| Beamx Software Limited | Information & communication | 2026 |
| Bear Digital Agency Ltd | Professional & scientific | 2018 |
| Bearavocado Ltd | Administrative & support | 2019 |
| Bearsorrow Ltd | Administrative & support | 2019 |
| Beatlift Ltd | Arts & recreation | 2020 |
| Beatlift Technology Ltd | Arts & recreation | 2022 |
| Beattock Ltd | Transport & logistics | 2022 |
| Beauchamp Property Maintenance Limited | Construction | 2024 |
| BEC Electrical Group Ltd | Construction | 2022 |
| Beckett Properties Limited | Real estate | 2019 |
| Beddows Properties Limited | Households | 2017 |
| Bedtime Comforts Ltd | Wholesale & retail | 2018 |
| Bedwas House Ltd | Transport & logistics | 2021 |
| BEE Blood Ltd | Wholesale & retail | 2019 |
| Beeches Lessees Management Limited | Households | 1985 |
| Beefy Bird Limited | Hospitality | 2025 |
| Beernutts Limited | Hospitality | 2017 |
| Bees Carpentry & Joinery Limited | Construction | 2019 |
| Beespoke Solutions Recruitment Ltd | Administrative & support | 2021 |
| Begg & Begg UK Limited | Administrative & support | 2022 |
| Bell Farm Limited | Construction | 2004 |