| Baytree Reserve Holding Co Limited | Wilmslow | 2025 |
| Bayview Oxwich Holdings Limited | Swansea | 2026 |
| BAZ Co Holdings Limited | Surrey | 2026 |
| BAZ Sky and Elvis Ltd | Penrith | 2024 |
| BAZ Topco Ltd | London | 2024 |
| Bazaar FX Ltd | London | 2023 |
| Bazaar Studio Holdings Limited | Leeds | 2026 |
| Bazalgette (Investments) Limited | London | 2015 |
| Bazalgette Finance PLC | London | 2015 |
| Bazalgette Power Limited | London | 2023 |
| Bazar Money Transfer Ltd | Borehamwood | 2020 |
| Bazari Wahab Holdings Limited | Histon | 2021 |
| Bazi Holdings Ltd | Crewe | 2022 |
| Bazie Mortgage and Financial Services Limited | Covent Garden | 2016 |
| Bazkat Investments Limited | Bury | 2024 |
| Bazmac Holdings Limited | Surrey | 2026 |
| Bazmac Property Holdings Limited | Surrey | 2026 |
| Bazmac Property North Limited | Surrey | 2026 |
| Bazmac Property South Limited | Surrey | 2026 |
| Bazmac UK Limited | Surrey | 2026 |
| Baznat Investment Ltd | Leicester | 2022 |
| BB & Co Holdings Ltd | London | 2025 |
| BB 2024 Limited | Leicester | 2024 |
| BB 86 Holdings Ltd | Glasgow | 2021 |
| BB Bioforth Agrotech Ltd | London | 2022 |
| BB Biopower Ltd | London | 2022 |
| BB Chicken UK Holding Ltd | Wembley | 2026 |
| BB Commercial Finance Limited | Hinckley | 2020 |
| BB Croft Holdings Limited | Gateshead | 2023 |
| BB Development Group Ltd | Birmingham | 2022 |
| BB Enterprises Ltd | Irthingborough | 2015 |
| BB Financial Services Ltd | Derby | 2016 |
| BB Financial Solutions Ltd | Ramsgate | 2008 |
| BB Holdco Limited | Croydon | 2024 |
| BB Holdings Southern Limited | Porstmouth | 2022 |
| BB Investment Group Ltd | London | 2023 |
| BB Investment Property Holdings Ltd | Lancing | 2023 |
| BB London Brokerage Services Limited | Sutton | 2020 |
| BB Merchant Services Ltd | Bishops Waltham | 2013 |
| BB Partners Advisory Holdings Limited | Crawley | 2024 |
| BB Recruitment Ltd | Manchester | 2024 |
| BB Recycling Holding Limited | London | 2015 |
| BB Richmond Limited | Twickenham | 2025 |
| BB Securities Limited | London | 1993 |
| BB SPV 1 Limited | Ledbury | 2025 |
| BB Technology Ltd | Elstree | 2021 |
| BB Topco Limited | Epsom | 2026 |
| BB Willis Investments Ltd | Droitwich | 2022 |
| BB10 Holdings Limited | Horsham | 2022 |
| BB24 Ltd | Worksop | 2024 |
| BB3 Holdings Ltd | Coalville | 2017 |
| BB4X Ltd | Rochester | 2026 |
| BB7 Group Limited | Kent | 2019 |
| BB7 Holdings Limited | Kent | 2019 |
| BB7 North Holdings Ltd | Bingley | 2025 |
| BBA Aviation Finance | London | 2007 |
| BBA Holdings Limited | Luton | 1955 |
| BBA London Finance Limited | Manchester | 2022 |
| BBA Trent Limited | Nottingham | 2009 |
| Bbaa Holdings Limited | Lincoln | 2021 |
| Bbai Group Holding Ltd | Swindon | 2024 |
| Bbak Business Holding Ltd | Reigate | 2026 |
| Bbansal Limited | Clerkenwell | 2016 |
| Bbas International Ltd | London | 2026 |
| BBB (2003) Ltd | London | 2026 |
| BBB Assets Limited | Falkirk | 2024 |
| BBB Integrated Services Limited | Bootle | 2018 |
| BBB Investment Holdings Limited | Sheffield | 2018 |
| BBB Investment Services Limited | Sheffield | 2024 |
| BBB Mandates Limited | Sheffield | 2025 |
| BBB Resources Ltd | Sale | 2024 |
| Bbbr Trading Limited | Northwood | 2024 |
| BBC Finance Limited | London | 2023 |
| BBC Pension Investment Limited | London | 2016 |
| BBC X Holdings Two Ltd | London | 2025 |
| Bbcp Holding Ltd | London | 2017 |
| BBD Consultancy Limited | London | 2018 |
| BBD Group Ltd | Bournemouth | 2018 |
| BBD Rock Limited | Hook | 2020 |
| BBE Holdings Limited | St. Albans | 2017 |
| Bbeco Ltd | Belfast | 2024 |
| Bbel Holdings Ltd | London | 2026 |
| Bben Property Services Limited | Hoddesdon | 2015 |
| Bbep Holdings Limited | Huddersfield | 2022 |
| Bbep Ltd | Saltcoats | 2024 |
| BBG Advisory Limited | London | 2015 |
| BBG Industries Limited | Maidenhead | 2014 |
| Bbg's Holdings Ltd | Romford | 2022 |
| Bbga Holdco Limited | Leeds | 2025 |
| BBH Holdings Limited | Walsall | 2024 |
| Bbh-Lsl (Holdco 5) Limited | London | 2017 |
| BBI Commodities Limited | Cardiff | 2020 |
| BBI Finance Limited | Sheffield | 1995 |
| BBI Financial Planning Limited | London | 2011 |
| BBI GBP Limited | Cardiff | 2020 |
| BBI Holdings Australia Limited | Newcastle Upon Tyne | 2014 |
| BBI Independent Financial Advisers Limited | Kidderminster | 2005 |
| BBI Solutions Group Limited | Cardiff | 2021 |
| BBI USD Limited | Cardiff | 2020 |
| Bbiba Holding Ltd | London | 2025 |