| Baynards Green Ltd | Transport & logistics | 2022 |
| Baynest Ltd | Wholesale & retail | 2025 |
| Bayston Hill Limited | Construction | 2025 |
| Bazline Group Ltd | Health & social care | 2025 |
| BB Catering Services Ltd | Hospitality | 2024 |
| BB Construction Services Ltd | Construction | 2025 |
| BB FD Services Limited | Professional & scientific | 2022 |
| BB Investments and Holdings Ltd | Real estate | 2021 |
| BB Roofline Specialists Limited | Construction | 2026 |
| BBB Properties Ltd | Real estate | 2025 |
| Bbeauty Lounge Limited | Wholesale & retail | 2017 |
| BBG and Sons 3103 Ltd | Transport & logistics | 2025 |
| Bbjt Transport Ltd | Transport & logistics | 2019 |
| Bbmaxtrading Limited | Wholesale & retail | 2020 |
| Bbmm Services Ltd | Construction | 2024 |
| Bbxmbaf Limited | Manufacturing | 2017 |
| BCD 6100 Limited | Real estate | 2024 |
| BCD Consulting Limited | Information & communication | 2012 |
| BCF Property Limited | Real estate | 2021 |
| BCG Logistics Ltd | Transport & logistics | 2026 |
| BCG Transport Ltd | Transport & logistics | 2023 |
| BCG28 Ltd | Construction | 2024 |
| BCI Pro Ltd | Construction | 2022 |
| BCM Automotive Ltd | Wholesale & retail | 2026 |
| BCO Logistic Ltd | Transport & logistics | 2025 |
| BCP Properties Limited | Real estate | 1993 |
| BCR Const Ltd | Construction | 2026 |
| BCR IT Ltd | Information & communication | 2008 |
| BCR Restaurants Limited | Wholesale & retail | 2007 |
| Bcrs Cief II Limited | Financial services | 2023 |
| Bcrs Cief Limited | Financial services | 2018 |
| Bcrs IFW CIP Limited | Financial services | 2023 |
| Bcrs IFW GP Limited | Financial services | 2023 |
| Bcrs Meif CIP Limited | Financial services | 2017 |
| Bcrs Meif GP Limited | Financial services | 2017 |
| Bcrs Meif II CIP Ltd | Financial services | 2023 |
| Bcrs Meif II GP Limited | Financial services | 2023 |
| BCS Construction Ltd | Construction | 2017 |
| BCS Highways Ltd | Transport & logistics | 2025 |
| BDN Packaging Limited | Manufacturing | 2012 |
| BDS Auto Commercial Ltd | Wholesale & retail | 2026 |
| BDS Flooring Ltd | Manufacturing | 2026 |
| Bdugmore Ltd | Households | 2025 |
| BE Care Limited | Public administration | 2022 |
| BE Happy Properties Ltd | Real estate | 2025 |
| BE Human Kind Ltd | Health & social care | 2021 |
| BE Safe NOT Sorry Limited | Administrative & support | 2004 |
| Beac Holdings Limited | Financial services | 2025 |
| Beaco Haulage Limited | Transport & logistics | 2025 |
| Beacon Enterprise Ltd | Wholesale & retail | 2018 |
| Beacon Finance Group Ltd | Professional & scientific | 2025 |
| Beacon Refurbs Ltd | Construction | 2024 |
| Beaconbloom Group Ltd | Wholesale & retail | 2025 |
| Beamish Barns Management Company Limited | Professional & scientific | 2010 |
| Beamish Properties Limited | Real estate | 2005 |
| Bean Better Coffee Ltd | Manufacturing | 2026 |
| Beansbox Ltd | Financial services | 2025 |
| Beansmiths Ltd | Hospitality | 2020 |
| Bears Bargains Ltd | Wholesale & retail | 2023 |
| Beast Hunger Ltd | Information & communication | 2025 |
| Beast Maker Music Ltd | Information & communication | 2026 |
| Beat Asylum Ltd | Arts & recreation | 2023 |
| Beatsabar Music Project C.I.C. | Information & communication | 2014 |
| Beauly Drive (Habitat) Residents Limited | Households | 1977 |
| Beaumaris Road Limited | Construction | 2018 |
| Beaumont Global Properties LLP | | 2015 |
| Beauticious Tanning & Beauty Limited | Other services | 2026 |
| Beautiful Bags Ltd | Wholesale & retail | 2025 |
| Beautiful Walls Ltd | Wholesale & retail | 1934 |
| Beautizone Ltd | Wholesale & retail | 2016 |
| Beauty and Massage Mellisa Ltd | Health & social care | 2025 |
| Beauty AS Limited | Other services | 2015 |
| Beauty Galore Ltd | Other services | 2025 |
| Beauty House Studio Limited | Other services | 2020 |
| Beauty of Juliet Limited | Wholesale & retail | 2022 |
| Beauty Queeen Ltd | Other services | 2022 |
| Beaver Homes Midlands Limited | Real estate | 2024 |
| BEC Brindley Electrical Contractors Ltd. | Construction | 2014 |
| Beckett Philatelics Holdings Limited | Financial services | 2019 |
| Beckett Philatelics Limited | Wholesale & retail | 1988 |
| Beckie Fashion & Interior Ltd | Wholesale & retail | 2023 |
| Becky's Childcare Limited | Health & social care | 2024 |
| Becompetent Limited | Information & communication | 2025 |
| Beddoes Holdings (WM) Ltd | Real estate | 2025 |
| Bedlinog Ltd | Transport & logistics | 2022 |
| Beds Solution Ltd | Manufacturing | 2024 |
| Bedumah Healthcare Ltd | Health & social care | 2026 |
| BEE Construction Services Ltd | Professional & scientific | 2019 |
| BEE Hive Essential Services Ltd | Professional & scientific | 2014 |
| Bee's Consultancy Ltd | Administrative & support | 2016 |
| Beechwood House Associates Ltd | Real estate | 2007 |
| Beechwood House Healthcare Ltd | Health & social care | 2021 |
| Beekes Building Limited | Construction | 2014 |
| Beemay Homes Ltd | Real estate | 2024 |
| BEEMAY15 Services Ltd | Health & social care | 2023 |
| Beenomadic Limited | Administrative & support | 2024 |
| Beeston-May Limited | Wholesale & retail | 2011 |
| Beet Entertainment Ltd. | Hospitality | 2024 |
| Beet Group Ltd | Financial services | 2026 |
| Beet Technologies Ltd. | Information & communication | 2024 |