| Beneficiary Limited | Professional & scientific | 2026 |
| Benjamin Workspace Consulting Ltd | Households | 2020 |
| Bens Trading Ltd | Wholesale & retail | 2025 |
| Benson & Bell Ltd | Construction | 2024 |
| Beresford Finance Limited | Professional & scientific | 2020 |
| Berkshire Maintenance Ltd | Other services | 2023 |
| Bermond Studio Ltd | Information & communication | 2026 |
| Bertanie Ltd | Health & social care | 2020 |
| Bertie & Beryl Pet Boutique Ltd | Wholesale & retail | 2025 |
| Bertram Retail Ltd | Wholesale & retail | 2019 |
| Beseen Ltd | Information & communication | 2026 |
| Bespoke Break Co. Ltd | Administrative & support | 2022 |
| Bespoke Corporate Finance LLP | | 2005 |
| Bespoke Electrics Ltd | Construction | 2021 |
| Bespoke Financial Planning Ltd | Financial services | 2014 |
| Bespoke Litigation Services Limited | Administrative & support | 2018 |
| Bespoke Logistics Solutions Ltd | Professional & scientific | 2010 |
| Bespoke Secretarial Services Limited | Administrative & support | 2018 |
| Bespoke Suffolk Limited | Construction | 2020 |
| Bespoke Tax Mitigation Ltd | Financial services | 2015 |
| Bespoke Tax Solutions Limited | Professional & scientific | 2018 |
| Bespoke Wealth Management Limited | Financial services | 2003 |
| Best Business Development Limited | Information & communication | 2024 |
| Best Comforts Limited | Wholesale & retail | 2026 |
| Best Euro Tours Ltd | Administrative & support | 2024 |
| Best Tastes of Suffolk Limited | Manufacturing | 2010 |
| Best Web Limited | Information & communication | 2024 |
| Bestform Ratings Limited | Information & communication | 2009 |
| Bestico UK Ltd | Wholesale & retail | 2015 |
| Bestling Ltd | Wholesale & retail | 2025 |
| Beststone Limited | Real estate | 1983 |
| Beta Idea Ltd | Information & communication | 2024 |
| Betcol Properties Ltd | Real estate | 2023 |
| Bethale London Limited | Manufacturing | 2021 |
| Betley Ltd | Professional & scientific | 2017 |
| Betsafe Ltd | Arts & recreation | 2025 |
| Better Base Ltd | Real estate | 2026 |
| Better Health and Performance Media Group Ltd | Other services | 2025 |
| Better Home Hub Ltd | Information & communication | 2025 |
| Better Internet Ltd | Wholesale & retail | 2022 |
| Better Rates Ltd | Financial services | 2019 |
| Better Sweets Ltd | Wholesale & retail | 2026 |
| Better Tutoring Limited | Education | 2023 |
| Better YOU and Friends Ltd | Other services | 2022 |
| Betterer Homes Ltd | Real estate | 2025 |
| Betts Ecobuild Ltd | Construction | 2024 |
| Betts Properties Ltd | Real estate | 2024 |
| Betts Property Investments Ltd | Real estate | 2019 |
| Beusin Ltd | Manufacturing | 2026 |
| Beveridge Imaging Ltd | Health & social care | 2021 |
| Beverley Devlopments Ltd | Real estate | 2023 |
| Bevlo Holdings Limited | Financial services | 2023 |
| Bevlo UK Limited | Professional & scientific | 2023 |
| Bewhit Ltd | Wholesale & retail | 2025 |
| Beylams Limited | Wholesale & retail | 2024 |
| Beyond Borders Tech Ltd | Wholesale & retail | 2024 |
| Beyond the Business Card Ltd | Administrative & support | 2026 |
| Beyond the Shelf Ltd | Wholesale & retail | 2021 |
| BFS Marketing Ltd | Professional & scientific | 2019 |
| Bft-Group Incorporation Ltd | Financial services | 2022 |
| BG Home Solutions Ltd | Construction | 2025 |
| BG Property Solutions Limited | Real estate | 2022 |
| Bggy Ltd | Wholesale & retail | 2025 |
| BGM Commodities Ltd | Wholesale & retail | 2025 |
| BGM Signs Ltd | Administrative & support | 2017 |
| BH Civils-Uk Ltd. | Professional & scientific | 2021 |
| BHA Services Ltd | Wholesale & retail | 2015 |
| Bhanujha Properties Ltd | Real estate | 2025 |
| Bhaskaran Ltd | Other services | 2019 |
| Bhutani Consultancy Ltd | Health & social care | 2021 |
| Bhutta Global Ltd | Information & communication | 2026 |
| Bianyi Ltd | Wholesale & retail | 2026 |
| BID Butler Limited | Information & communication | 2023 |
| BID Catalyst Limited | Extraterritorial | 2018 |
| Bidet Nation UK Ltd | Wholesale & retail | 2022 |
| Big BEN Solutions Limited | Information & communication | 2026 |
| Big Brother Trade Ltd | Agriculture & fishing | 2024 |
| Big Foot Car Ltd | Wholesale & retail | 2018 |
| Big POT Music Ltd | Wholesale & retail | 2018 |
| Big POT Records Ltd | Wholesale & retail | 2018 |
| Big Shed Self Storage Ltd. | Administrative & support | 2010 |
| Big Shot Ltd. | Wholesale & retail | 2024 |
| Big Sky Thinking Ltd | Professional & scientific | 2015 |
| Big Slick Properties Ltd | Real estate | 2019 |
| Bigbellies Ltd | Hospitality | 2025 |
| Bigbumble Ltd | Arts & recreation | 2023 |
| Bigness Capital Ltd | Administrative & support | 2024 |
| Bilden Ltd | Information & communication | 2016 |
| Bill Chew Architect Limited | Professional & scientific | 2012 |
| Billet Solutions Ltd | Real estate | 2020 |
| Billy's Burger Ltd | Hospitality | 2022 |
| BIN Boutique Durham Ltd | Administrative & support | 2024 |
| Binauri Ltd | Information & communication | 2025 |
| Binyx Entertainment Ltd | Information & communication | 2025 |
| BIO Pulse Prime Ltd | Professional & scientific | 2025 |
| Bio-Cup Limited | Wholesale & retail | 2019 |
| Biochannel Ltd | Information & communication | 2014 |
| Biocreating.Wise Ltd. | Professional & scientific | 2017 |
| Biomed Laboratory Training Ltd | Administrative & support | 2023 |
| Bioplus Ltd | Manufacturing | 2023 |