| B & J Locke Holdings Limited | Axminster | 2026 |
| B & K Property Holdings Limited | Wallsend | 2023 |
| B & K Universal Group Limited | Aldbrough | 1989 |
| B & K Vaughan Limited | Newport | 2019 |
| B & LS Holdings Limited | Coleshill | 2025 |
| B & M Accountants Ltd | Hornchurch | 2017 |
| B & M Assets Limited | Woodford Green | 2017 |
| B & M Holdings Limited | Bracknell | 2021 |
| B & M Investments (Midlands) Ltd | Birmingham | 2025 |
| B & M Seafoods Holdings Limited | Eye | 2020 |
| B & N Blinds Ltd | Northampton | 2023 |
| B & N Ward Family Investments Ltd | Doncaster | 2022 |
| B & P Finance Consultants Limited | Maidstone | 2002 |
| B & P Holdings (Yorkshire) Ltd | Sheffield | 2024 |
| B & P Investments Limited | London | 1990 |
| B & PD GP Limited | Edinburgh | 2020 |
| B & PD Limited | London | 2020 |
| B & Q Financial Services Limited | Birmingham | 2006 |
| B & R Lynes | Edinburgh | 2022 |
| B & R Management Limited | Redhill | 1990 |
| B & S Capital Investment Ltd | Dagenham | 2018 |
| B & S Financial Management Limited | Warrington | 1986 |
| B & S Future Ltd | Solihull | 2024 |
| B & S Holdings Ltd | Birmingham | 2022 |
| B & S Media Limited | Tunbridge Wells | 2018 |
| B & Sons Holdings Ltd | Rainham | 2023 |
| B & T Mortgage Solutions (UK) Ltd | Gillingham | 2016 |
| B & V Corporate Limited | London | 2013 |
| B & White Ltd | Epsom | 2017 |
| B 13 B Unlimited | Cheltenham | 2022 |
| B @ 1 ORG Limited | Brighton | 2008 |
| B a Asset Holdings Ltd | Bolton | 2019 |
| B a C Holdings Limited | London | 2017 |
| B a Contracting Limited | Leeds | 2019 |
| B a Finance Limited | Stanmore | 2009 |
| B a P Estate Management Limited | Harrow | 2023 |
| B ABT Investments Limited | London | 2014 |
| B and a London Limited | Hatfield | 2015 |
| B and B Express Limited | London | 2023 |
| B and B Land Holdings Limited | Great Yarmouth | 2013 |
| B and B Success Ltd | London | 2025 |
| B and J Property Limited | Dunfermline | 2019 |
| B and K Finance Ltd | London | 2019 |
| B and L Edwards Holdings Limited | Waterlooville | 2013 |
| B and L Electrical (Holdings) Limited | Stoke-On-Trent | 2012 |
| B and L Electrical Group Limited | Stoke-On-Trent | 2023 |
| B and SM Altman Ltd | Waltham Cross | 2020 |
| B and T Holding Ltd | Bodmin | 2026 |
| B Axentra Global Ltd | Luton | 2025 |
| B B Contracts Group Limited | Rochester | 2023 |
| B B George Limited | Cardiff | 2022 |
| B B Holdings 2024 Limited | Long Eaton | 2024 |
| B B Mortgages Ltd | Lincoln | 2012 |
| B B R (Management) Limited | Bootle | 2014 |
| B Bagel Holding Limited | Colindale | 2025 |
| B Baker Holdings Ltd | Hertford | 2026 |
| B Bamford Holdings Limited | Malvern | 2016 |
| B Barnes Holdings Ltd | Peterborough | 2025 |
| B Batch Holdings Limited | Hull | 2017 |
| B Beales Developers Holdings Ltd | Norwich | 2026 |
| B BEE Holdings Limited | Exeter | 2025 |
| B Bull Limited | Chippenham | 2021 |
| B Capital 1 Limited | London | 2023 |
| B Capital 2 Limited | London | 2023 |
| B Capital 3 Limited | London | 2025 |
| B Capital Holdings Limited | Gateshead | 2018 |
| B Capital Investment Ltd | Sutton | 2023 |
| B Capital Limited | Bromley | 2024 |
| B Capital Partners Limited | Salford | 2026 |
| B Carty & Sons Limited | | 2004 |
| B Choice Limited | London | 2007 |
| B Coles SW Ltd | Taunton | 2019 |
| B Consulting Group Ltd | London | 2025 |
| B D & B Investments Limited | | 1994 |
| B D Burton Group Ltd | Bath | 2020 |
| B D Gurner Holdings Ltd | Pontyclun | 2023 |
| B Draycott Holding Co Limited | Kirkby In Ashfield | 2025 |
| B E ENO Ltd | Bury St. Edmunds | 2023 |
| B Elliott Property (Holdings) Ltd | Huddersfield | 2024 |
| B Financial Limited | Watford | 2017 |
| B Fit Group Limited | Cardiff | 2021 |
| B Frank Properties Limited | Bolton | 2019 |
| B G Scholefield Ltd | Larkhall | 2026 |
| B G Tarrant Ltd | Eastbourne | 2021 |
| B Glover Holdings Ltd | Leicester | 2026 |
| B Goodsell-King Limited | Derby | 2012 |
| B Greatorex Holdings Ltd | Coalville | 2026 |
| B Group South West Limited | Borehamwood | 2020 |
| B H Blackmore Holdings Limited | Kidlington | 2021 |
| B H Hotels Ltd | Leeds | 2016 |
| B H Hotels Topco Ltd | Leeds | 2025 |
| B H Insolvency Limited | Liskeard | 2019 |
| B H M Holdings Limited | Plymouth | 2018 |
| B H Property Finance Limited | Norwich | 2025 |
| B Hall Holdings Ltd | Strathclyde Business Park | 2025 |
| B Holland & Sons (Holdings) Ltd | Liverpool | 2025 |
| B Hough Financial Services Holdings Limited | Audley | 2022 |
| B Hough Investments Limited | Audley | 2022 |
| B Hubbard Holdings Limited | Peterborough | 2015 |
| B Humphries Holdings Limited | Bury | 2025 |