| Autumn Way Investments Ltd. | Real estate | 2021 |
| AVA Works Ltd | Financial services | 2025 |
| AVC London Group Ltd | Real estate | 2025 |
| Aviation Supply Chain Ltd | Information & communication | 2019 |
| Avonwood Homes Ltd | Households | 2022 |
| Avscjbusinessgrouppvt Ltd | Hospitality | 2025 |
| Avtav Ltd | Administrative & support | 2020 |
| Awadhi Hospitality Ltd | Hospitality | 2023 |
| Awan Cars Ltd | Transport & logistics | 2018 |
| Awesome World Limited | Wholesale & retail | 2016 |
| AWK IT Limited | Information & communication | 2024 |
| Axell Properties Ltd | Real estate | 2014 |
| Axio Consulting Ltd | Information & communication | 2020 |
| Axis IT Services Ltd | Information & communication | 2024 |
| Ayto Transport (UK) Ltd | Transport & logistics | 2009 |
| AZ Airport Transfer Ltd | Transport & logistics | 2025 |
| Azaan Ltd | Transport & logistics | 2016 |
| Azan Travel Ltd | Other services | 2026 |
| Azure Accountancy LLP | | 2017 |
| B & H Worldwide Limited | Transport & logistics | 1987 |
| B Dutt Property Services Ltd | Real estate | 2025 |
| B K Engineer Ltd | Construction | 2015 |
| B Murugan Tech Limited | Information & communication | 2025 |
| B&A Sisters Ltd | Hospitality | 2025 |
| B&E Building Services Ltd | Construction | 2018 |
| B&H Worldwide (Holdings) Limited | Transport & logistics | 1988 |
| B&P Technologies Ltd | Information & communication | 2016 |
| B.A.L.P.A. Custodian Trustees Limited | Other services | 1988 |
| B.D.S Fast Track UK Limited | Transport & logistics | 2026 |
| B.George & Sons UK Ltd | Wholesale & retail | 2020 |
| B2UK Limited | Wholesale & retail | 2025 |
| B4BRANDED Ltd | Wholesale & retail | 2017 |
| BA Excepted Group Life Scheme Limited | Administrative & support | 2018 |
| BA Parking Limited | Other services | 2024 |
| Baani Kitchen Limited | Hospitality | 2025 |
| Baav UK Limited | Wholesale & retail | 2021 |
| Baaz Roofing Ltd | Construction | 2023 |
| Babes Aestheticss Ltd | Other services | 2024 |
| Babone Ltd | Transport & logistics | 2020 |
| Bainstech Ltd | Information & communication | 2022 |
| BAJ Freight Ltd | Transport & logistics | 2021 |
| Baker BEE Ltd | Manufacturing | 2025 |
| BAL and Bajwa Transport Ltd | Transport & logistics | 2025 |
| Balaji Analah Ltd | Real estate | 2024 |
| Balkino Ltd | Information & communication | 2026 |
| Balp Ltd | Construction | 2020 |
| Balpa Financial Solutions Limited | Financial services | 1987 |
| Baltic Security Systems Ltd | Manufacturing | 2020 |
| Banee Ekam Ltd | Real estate | 2024 |
| Bangkok Box Ltd | Wholesale & retail | 2021 |
| Banion Limited | Real estate | 2024 |
| Barb Technologies Limited | Information & communication | 2022 |
| Barber Cleaning Services Ltd | Administrative & support | 2025 |
| Base Management Consulting Services Ltd | Information & communication | 2018 |
| Bathroomdealer Limited | Wholesale & retail | 2024 |
| Bbaimpact Limited | Health & social care | 2016 |
| BC Chauffeurs Ltd | Transport & logistics | 2025 |
| BCL Logistics Ltd | Transport & logistics | 2025 |
| BE Like Water Ltd | Professional & scientific | 2020 |
| BE YOU Jewellery Ltd | Wholesale & retail | 2024 |
| Beast Security Services Ltd | Administrative & support | 2024 |
| Beatrix Cleaners UK Limited | Administrative & support | 2025 |
| Beauty Blends Aesthetics Ltd | Other services | 2024 |
| Beauty ERA Ltd | Wholesale & retail | 2024 |
| BEE Cured Limited | Wholesale & retail | 2024 |
| Beeeye Ltd | Information & communication | 2023 |
| Behl & Sons Constructions Ltd | Construction | 2025 |
| Behl Constructions Ltd | Construction | 2019 |
| Being Intellect Ltd | Professional & scientific | 2024 |
| Bell Farm Christian Centre | Other services | 2000 |
| Bellas Castle Limited | Wholesale & retail | 2022 |
| Bellc Consulting Ltd | Information & communication | 2018 |
| Beloved Home Interiors Limited | Wholesale & retail | 2026 |
| Berkshire Property Holdings Ltd | Real estate | 2019 |
| Beryl Technologies Ltd | Information & communication | 2023 |
| Best Airport Transfers London Ltd | Transport & logistics | 2024 |
| Best Autos Limited | Wholesale & retail | 2026 |
| Best FOOD1 Ltd | Hospitality | 2023 |
| Best Price Comparison Ltd | Other services | 2014 |
| Bethel PM Limited | Professional & scientific | 2012 |
| Bettersite Construction Ltd | Construction | 2024 |
| Bettys Bliss Ltd | Other services | 2025 |
| Between Hours Limited | Manufacturing | 2026 |
| BGD Estates Ltd | Real estate | 2023 |
| Bgkt Trading Limited | Wholesale & retail | 2026 |
| Bhamra Construction Ltd | Construction | 2021 |
| Bhamra Wood Works Ltd | Other services | 2023 |
| Bhangu Motors Ltd | Transport & logistics | 2018 |
| Bhoumika Ltd | Information & communication | 2021 |
| Bhoumika Real Estate Ltd | Real estate | 2025 |
| BIC Global Training and Consultancy Limited | Professional & scientific | 2024 |
| Bickfordhouse Limited | Hospitality | 2025 |
| Bifold Door Factory Ltd | Manufacturing | 2013 |
| Big Bowl Ltd | Wholesale & retail | 2025 |
| BIN Y IT Global Ltd | Wholesale & retail | 2023 |
| Binmusa Ltd | Hospitality | 2024 |
| BIR Property Investments Ltd | Real estate | 2020 |
| Biryani Wala Ltd | Hospitality | 2019 |
| Bismillah World Limited | Other services | 2017 |
| Bitroad Limited | Wholesale & retail | 2026 |