| Azat Family Property Ltd | Real estate | 2023 |
| Azatek Instruments Ltd | Manufacturing | 2018 |
| Azula Limited | Wholesale & retail | 2016 |
| B & O Energy Services Limited | Professional & scientific | 2006 |
| B & T Mortgage Solutions (UK) Ltd | Financial services | 2016 |
| B Scientific Consultancy Ltd | Manufacturing | 2018 |
| B&Y Ltd | Construction | 2017 |
| B.A. International Limited | Health & social care | 1991 |
| B.Clean & Gleam Ltd | Administrative & support | 2024 |
| B.Clean Cleaning Company Ltd | Administrative & support | 2023 |
| B.Max Construction Ltd | Construction | 2021 |
| BA Food Service Ltd | Hospitality | 2020 |
| Babel Children's Home Limited | Health & social care | 2025 |
| Babos Kebab and Fish Ltd | Hospitality | 2023 |
| Babysteps Limited | Administrative & support | 2023 |
| Badd Grammer Media Ltd | Information & communication | 2025 |
| Baichas Ltd | Health & social care | 2019 |
| Baillie Jones Limited | Professional & scientific | 2016 |
| Bain and Morton Limited | Agriculture & fishing | 2026 |
| Baina Chemical Co., Ltd | Wholesale & retail | 2024 |
| Bainly House Annex Ltd | Real estate | 2022 |
| Bajanak Trade Ltd | Wholesale & retail | 2024 |
| Bakadel Properties Limited | Real estate | 2026 |
| Bakar Mobile Beauty Ltd | Other services | 2020 |
| Baker Beckett Enterprises Ltd | Administrative & support | 2019 |
| Bakers Field Cliffsend Management Company Ltd | Households | 2019 |
| Balaji Jeevanandham Radiology Ltd | Health & social care | 2025 |
| Ballands Bowmen Archery Club Limited | Arts & recreation | 2010 |
| Ballard Court Management Company Limited | Households | 2018 |
| Bambee Ltd | Wholesale & retail | 2021 |
| Bankview RTM Management Co Ltd | Households | 2013 |
| Baotuo (Tianjin) Steel Group Co., Ltd | Manufacturing | 2023 |
| Bapchild Motoring World (Kent) Limited | Wholesale & retail | 2003 |
| Bapchild Propco 1 Limited | Financial services | 2024 |
| Baras Holdings Ltd. | Wholesale & retail | 2015 |
| Barber Delon Ltd | Other services | 2023 |
| Barnard Property Group Limited | Real estate | 2023 |
| Barncrest NO. 141 Limited | Financial services | 2002 |
| Barnsole Trading Limited | Wholesale & retail | 2026 |
| Barnton Management Limited | Real estate | 2016 |
| Barnton Sales Limited | Real estate | 1996 |
| Bartholomew Property Holdings Ltd | Real estate | 2019 |
| Basbro Corporation Ltd | Construction | 2022 |
| Basciit Solutions Ltd | Information & communication | 2019 |
| Base & Lacquer Limited | Wholesale & retail | 2025 |
| Base Scaffolding (Kent) Limited | Construction | 2005 |
| Bashmac Properties Limited | Real estate | 2023 |
| Basi Developments Limited | Construction | 2006 |
| Basic Batch Cookies Ltd | Manufacturing | 2026 |
| Basic Shirts London Limited | Wholesale & retail | 2021 |
| Basic Shirts MN Limited | Wholesale & retail | 2025 |
| Baskan Limited | Administrative & support | 2012 |
| Batchwell Limited | Health & social care | 2021 |
| Batfish Media Limited | Information & communication | 2008 |
| Bath Panel Store Ltd | Manufacturing | 2013 |
| Bathnet Ltd | Administrative & support | 2022 |
| Battery Specialists South East Limited | Wholesale & retail | 2017 |
| Batyr Property Limited | Real estate | 2025 |
| Baxtian Construction Limited | Construction | 2013 |
| Baxtian Homes Limited | Construction | 2013 |
| Bay View Cafe Limited | Hospitality | 2009 |
| Bayford Motors Ltd | Wholesale & retail | 2023 |
| Bazaar Tents Ltd | Wholesale & retail | 2016 |
| Bazetwo Ltd | Wholesale & retail | 2024 |
| BB Demolition Limited | Construction | 2018 |
| BB Fire Safety Ltd | Public administration | 2021 |
| BB Motor Company MOT Centre Ltd | Wholesale & retail | 2026 |
| BBA Transport Ltd | Construction | 2024 |
| Bbox Global Ltd | Transport & logistics | 2016 |
| BC Window Cleaning Limited | Administrative & support | 2011 |
| Bcee International Trading Co., Ltd | Manufacturing | 2026 |
| Bctec Limited | Information & communication | 2007 |
| Bdek Care Services Ltd | Health & social care | 2024 |
| BDL GAS Services Limited | Wholesale & retail | 2004 |
| BDR Creatives Ltd | Arts & recreation | 2010 |
| BDS Building & Maintenance Ltd | Construction | 2025 |
| BE Easy Products Co., Ltd. | Extraterritorial | 2018 |
| Beall Industry Co., Ltd | Extraterritorial | 2021 |
| Beam Care Services Limited | Education | 2011 |
| Beams Holdings Limited | Extraterritorial | 1997 |
| Beams International Limited | Wholesale & retail | 1999 |
| Beams Packaging Services Limited | Administrative & support | 2010 |
| Beams Properties Limited | Extraterritorial | 2015 |
| Beanpeg Ltd | Other services | 2022 |
| Bearsted Views Management Company Limited | Households | 2013 |
| Beassured Ventures Limited | Wholesale & retail | 2023 |
| Beaufort & Chancellor Partners Limited | Professional & scientific | 2025 |
| Beautiful Nails Gillingham Limited | Other services | 2026 |
| Beauté Elite Ltd | Education | 2022 |
| BEB Logistics Ltd | Wholesale & retail | 2019 |
| BEE Tech Limited | Construction | 2011 |
| Beech Wood Management Company (Maidstone) Limited | Households | 2005 |
| Beeches 16 Ltd | Construction | 2019 |
| Beeline Logistics Limited | Transport & logistics | 2000 |
| Beeline Same Day Limited | Transport & logistics | 1992 |
| Beeson and Beeson Limited | Professional & scientific | 2008 |
| Beetle Transport Ltd | Transport & logistics | 2019 |
| Bee’S Knees Curiosities Ltd | Wholesale & retail | 2026 |
| Begood Care Properties Limited | Real estate | 2024 |
| Begorteen Healthcare Limited | Health & social care | 2010 |