| BE Taxi MK Ltd | Transport & logistics | 2025 |
| BE Your Crown Wellness Hub CIC | Health & social care | 2026 |
| Be-Eco Mech Limited | Construction | 2016 |
| BE3 Consulting Limited | Professional & scientific | 2017 |
| BE4 Stone Limited | Health & social care | 1995 |
| BEA Harmony Support Limited | Other services | 2026 |
| Beach and Cruise Limited | Administrative & support | 2017 |
| Beach HUT Lash Studio Ltd | Other services | 2024 |
| Beachampton Agri Solutions Ltd | Agriculture & fishing | 2022 |
| Beachampton Limited | Transport & logistics | 2016 |
| Beachampton Motors Ltd | Wholesale & retail | 2020 |
| Beachampton Realty Holdings UK Ltd | Real estate | 2025 |
| Beachreap Ltd | Other services | 2024 |
| Beacon Control Projects Limited | Construction | 2019 |
| Beacon Enterprise Investments Limited | Financial services | 2017 |
| Beacon Home Automation Ltd | Construction | 2017 |
| Beacon Installation Services Limited | Construction | 2019 |
| Beacon LIP Limited | Other services | 2016 |
| Beacon Market Research Limited | Professional & scientific | 2021 |
| Beaconsfield 38/44 Limited | Households | 1989 |
| Beam Inspire Ltd | Administrative & support | 2021 |
| Beaming Homes Ltd | Health & social care | 2023 |
| Beangrower Ltd | Information & communication | 2025 |
| Beanhill Stores Limited | Wholesale & retail | 2014 |
| Beanpod Ltd | Financial services | 2021 |
| Bear Project YPT Limited | Administrative & support | 2014 |
| Bear's Financial Services Limited | Professional & scientific | 2024 |
| Beardow Adams Holdings Ltd | Financial services | 2015 |
| Bearmonkey Property Ltd | Real estate | 2016 |
| Beastyera Ltd | Administrative & support | 2018 |
| Beat the Pressure CIC | Health & social care | 2026 |
| Beaten Track Music Ltd | Information & communication | 2016 |
| Beatfit Ltd | Information & communication | 2024 |
| Beau & Bear Properties Ltd | Real estate | 2026 |
| Beau & Cole Limited | Professional & scientific | 2024 |
| Beaufort Financial Planning (North West) Limited | Extraterritorial | 2005 |
| Beaufort Financial Planning (Three Counties) Ltd | Extraterritorial | 2018 |
| Beaufort Financial Planning (West Midlands) Ltd | Extraterritorial | 1999 |
| Beaumount Properties Limited | Construction | 2009 |
| Beautiful Doors Limited | Other services | 2019 |
| Beautiful Minds Consult Ltd | Professional & scientific | 2026 |
| Beautiful Rooms and Interiors Limited | Other services | 2019 |
| Beautilicious Aesthetics Ltd | Other services | 2025 |
| Beautink Ltd | Other services | 2023 |
| Beautuition Limited | Other services | 2019 |
| Beauty Box Brooklands Ltd | Other services | 2020 |
| Beauty Buys 4U Limited | Wholesale & retail | 2018 |
| Beauty by Lovely Ltd | Other services | 2025 |
| Beauty by ME Limited | Information & communication | 2017 |
| Beauty by Zarz Ltd | Other services | 2024 |
| Beauty ID Manufacturers Ltd | Manufacturing | 2011 |
| Beauty IQ Technology Ltd | Wholesale & retail | 2026 |
| Beauty Lounge (MK) Ltd | Other services | 2016 |
| Beauty Network Technology Ltd | Wholesale & retail | 2025 |
| Beauty Pluz Ltd | Other services | 2025 |
| Beautyturess Ltd | Wholesale & retail | 2025 |
| BEC Distribution Limited | Wholesale & retail | 2015 |
| Beck J Ltd | Wholesale & retail | 2026 |
| Beck Property Services Limited | Real estate | 2003 |
| Beckfield Developments Limited | Construction | 2005 |
| Becks & LEE Services Limited | Administrative & support | 2020 |
| Beclicked Online Ltd | Administrative & support | 2014 |
| Becrystal Holistics Ltd | Wholesale & retail | 2025 |
| Bective Road Management Company Limited | Households | 2017 |
| Bedale Wright Developments Ltd | Real estate | 2024 |
| Bedford & Milton Keynes Waterway Enterprises Ltd | Transport & logistics | 2012 |
| Bedford Boilers Ltd | Construction | 2023 |
| Bedford Budget Tyres Limited | Wholesale & retail | 2002 |
| Bedford Car Repairs Ltd | Wholesale & retail | 2026 |
| Bedford Compliance & Electrical Ltd | Construction | 2026 |
| Bedford Estates 1971 Settlement NO.1 Ltd | Other services | 2024 |
| Bedford Estates 1971 Settlement NO.2 Ltd | Other services | 2024 |
| Bedford Estates 1987 Settlement NO.1 Ltd | Other services | 2024 |
| Bedford Estates 1987 Settlement NO.2 Ltd | Other services | 2024 |
| Bedford Estates Nominees Limited | Real estate | 1999 |
| Bedford Floor Care Ltd | Administrative & support | 2025 |
| Bedford Public Accountants Limited | Professional & scientific | 2020 |
| Bedford Sports Services Ltd | Other services | 2019 |
| Bedford Timber (ST Neots) Limited | Wholesale & retail | 2000 |
| Bedford Timber Supplies Limited | Wholesale & retail | 1982 |
| Bedford Waste Removals Ltd | Water & waste | 2018 |
| Bedfordshire Waste Removals Ltd | Extraterritorial | 2020 |
| Bediako Group of Companies Ltd | Transport & logistics | 2022 |
| Bedworld Factory Shop Limited | Wholesale & retail | 2018 |
| BEE Happy Trades Ltd | Financial services | 2026 |
| BEE Honest Pest Control Ltd | Administrative & support | 2018 |
| Bee's Grilled Chicken Limited | Hospitality | 2018 |
| Beech Facilities Management LLP | | 2011 |
| Beeching Carving Ltd | Manufacturing | 2014 |
| Beeline Engineering Products Limited | Other services | 1989 |
| Beemcare Limited | Health & social care | 2015 |
| Bees Transport Ltd | Transport & logistics | 2025 |
| Beetii Limited | Wholesale & retail | 2021 |
| Beewear Limited | Wholesale & retail | 2005 |
| Befooki Limited | Wholesale & retail | 2016 |
| Begum Bakery Ltd | Manufacturing | 2023 |
| Behaviour First Consultancy Limited | Professional & scientific | 2015 |
| Behind the Scenes HQ Ltd | Professional & scientific | 2026 |
| Behome Property Ltd | Households | 2022 |
| Beingpurple Ltd | Extraterritorial | 2021 |