| Beckton Bakery Ltd | Manufacturing | 2024 |
| Becky's B Enterprise CIC | Other services | 2023 |
| Bedoz Ltd | Wholesale & retail | 2026 |
| BEE Bonnie Limited | Construction | 2024 |
| BEE Market Ltd | Wholesale & retail | 2024 |
| Bee-Line Film Transport Ltd | Transport & logistics | 2021 |
| Beech Hanger Sales Limited | Professional & scientific | 2025 |
| Beecroft Properties Limited | Real estate | 1996 |
| Beemore Drink Ltd | Manufacturing | 2023 |
| Beeppay UK Limited | Information & communication | 2020 |
| Beethoven Street Productions Limited | Information & communication | 2021 |
| Befit Studio Limited | Arts & recreation | 2020 |
| BEG Services Ltd | Manufacturing | 2017 |
| Begu Properties Ltd | Real estate | 2024 |
| Begu Scaffolding Ltd | Construction | 2012 |
| Behniwaldecorators Ltd | Manufacturing | 2025 |
| Beiant Investments Ltd | Real estate | 2019 |
| Beigel Express Limited | Hospitality | 2025 |
| Bekame Creative Ltd | Information & communication | 2026 |
| Bekash Essex Ltd | Hospitality | 2026 |
| Bekash Romford Limited | Hospitality | 2024 |
| Bela Napoli Ltd | Hospitality | 2022 |
| Belcon Precast Limited | Manufacturing | 2018 |
| Belfiore Lodge Freeholders Ltd | Real estate | 2021 |
| Belfiore Lodge Management Company Limited | Real estate | 2005 |
| Belfry Property Services Limited | Construction | 1988 |
| Belhus Land Ltd | Construction | 2005 |
| Bell Stud Farm Ltd | Agriculture & fishing | 2026 |
| Bella Amalfi Ltd | Hospitality | 2025 |
| Bella Clinics Ltd | Other services | 2019 |
| Bella Luna ALB Ltd | Hospitality | 2022 |
| Bellam Properties Limited | Real estate | 2025 |
| Bellangerais Holding Ltd | Financial services | 2020 |
| Bellaric Participations Limited | Financial services | 2022 |
| Bellewise Care and Catering Ltd | Hospitality | 2020 |
| Bells Ascot Ltd | Financial services | 2013 |
| Belo H&B Ltd | Real estate | 2026 |
| Belonging Group Community Interest Company | Other services | 2026 |
| Beloro Limited | Wholesale & retail | 2026 |
| Beltret Group Ltd. | Wholesale & retail | 2012 |
| Belxon Ltd | Real estate | 2019 |
| Bembridge Consultancy Limited | Health & social care | 2008 |
| BEN & Partners Limited | Wholesale & retail | 2025 |
| BEN and Sons Construction Limited | Construction | 2019 |
| BEN Building Ltd | Construction | 2019 |
| BEN Construction Ltd | Construction | 2019 |
| BEN Rajab Limited | Construction | 2012 |
| BEN Wilson Barbers (Chelmsford) Ltd | Other services | 2022 |
| BEN Wilson Barbers Limited | Other services | 2011 |
| Ben&Shaw Constructions Ltd | Construction | 2024 |
| Benarishomeuk Ltd | Health & social care | 2020 |
| Benched Ltd | Wholesale & retail | 2025 |
| Bendy Holdings Ltd | Financial services | 2021 |
| Benefit Platforms Limited | Information & communication | 2018 |
| Benjay Ventures Limited | Arts & recreation | 2016 |
| Bennyelom Ltd | Information & communication | 2026 |
| Bens Advisory Ltd | Professional & scientific | 2021 |
| Bentley One Ltd | Information & communication | 2024 |
| Bento Works Limited | Information & communication | 2025 |
| Benton Holdings Ltd | Other services | 2025 |
| Benvolere Ltd | Information & communication | 2025 |
| Benzmark Ltd | Hospitality | 2019 |
| BEP Academy | Professional & scientific | 2011 |
| BEP Appointments (UK) Limited | Administrative & support | 1996 |
| Beresford Seafood Ltd | Wholesale & retail | 2019 |
| Berjoza Limited | Other services | 2015 |
| Berkshire Investing Limited | Real estate | 2022 |
| Bermiz Ltd | Hospitality | 2024 |
| Bernadet Ltd | Health & social care | 2024 |
| Berpar Limited | Wholesale & retail | 2021 |
| Bertram Homes Limited | Real estate | 1994 |
| BES Consultancy Ltd | Education | 2013 |
| Bespoke Engineers Limited | Professional & scientific | 2016 |
| Bespoke Furnitity Ltd | Construction | 2024 |
| Bespoke Futures Academy Ltd | Education | 2026 |
| Bespoke Garden Rooms & Decking Ltd | Construction | 2020 |
| Bespoke Law Services (UK) Limited | Professional & scientific | 2013 |
| Bespoke Metal Roofing Ltd | Construction | 2019 |
| Bespoke Stair Runners Limited | Wholesale & retail | 2025 |
| Bespoke Wills & Trusts Ltd | Professional & scientific | 2018 |
| Bespoke Your Space Ltd | Manufacturing | 2024 |
| Best Building Construction Ltd | Construction | 2022 |
| Best Chinese Catering Ltd | Hospitality | 2025 |
| Best Chippy Ltd | Hospitality | 2025 |
| Best Domestic Appliances Ltd | Other services | 2025 |
| Best DRY Cleaners (Romford) Ltd | Other services | 2018 |
| Best Electric Solutions Limited | Professional & scientific | 2017 |
| Best Electrics Solutions Ltd | Construction | 2025 |
| Best Fitted Kitchens Ltd | Construction | 2022 |
| Best Fitted Wardrobe Limited | Manufacturing | 2017 |
| Best Forex Private Ltd | Financial services | 2016 |
| Best of India Ltd | Hospitality | 2022 |
| Best of Whisky Ltd | Wholesale & retail | 2022 |
| BESTBUYS4ALL Ltd | Wholesale & retail | 2026 |
| Bestfittedwardrobesandkitchens Limited | Manufacturing | 2020 |
| Bestican Manor DOM Care and Support Services Ltd | Health & social care | 2025 |
| Besties YUM Ltd | Hospitality | 2025 |
| Besure Support Services Ltd | Administrative & support | 2026 |
| BET Essex (UK) Ltd | Arts & recreation | 2011 |
| Beta Recruitment Group Limited | Administrative & support | 2019 |