| Bursa Limited | Sale | 2024 |
| Bursary Administration Limited | Devizes | 2008 |
| Burscough Wharf Holdings Limited | Ormskirk | 2019 |
| Burscough Wharf Limited | Ormskirk | 2019 |
| Burson Buchanan Limited | London | 1980 |
| Bursthaven Limited | Barnet | 1996 |
| Burt Bros. (Holdings) Limited | Nottingham | 2024 |
| Burt Financial Planning Ltd | East Linton | 2021 |
| Burton & Candlesby Limited | Spilsby | 2023 |
| Burton & Farley's Ltd | Nottingham | 2018 |
| Burton & Sons Wealth Management Limited | Morecambe | 2026 |
| Burton Cliff Healthcare Limited | Walsall | 2015 |
| Burton DEX Limited | Norwich | 2023 |
| Burton Family Investments Limited | Northampton | 2021 |
| Burton Harvey Mortgage Services Limited | Godmanchester | 2018 |
| Burton James Financial Services Limited | Bolton | 2026 |
| Burton Joyce Developments Limited | Nottingham | 2025 |
| Burton Multimedia Ltd | Southwell | 2026 |
| Burton Property Investments (Hull) Limited | Hull | 2026 |
| Burton Varley Ltd | Altrincham | 2014 |
| Burton Ventures Ltd | London | 2024 |
| Burton Wealth Management Limited | St. Albans | 2011 |
| Burton Wold Holdings Limited | London | 2021 |
| Burtons of Maidstone Limited | Tonbridge | 2000 |
| Burtonwood Group Specialist Services Ltd. | Merseyside | 1999 |
| Burts (Hull) Limited | East Yorkshire | 1957 |
| Burvest Limited | Holt | 2026 |
| Burwell 11 Solar Holdco Limited | London | 2025 |
| Burwell Holdings Limited | London | 2019 |
| Burwin Estates Limited | Bournemouth | 2025 |
| Burwin Residential Investments Limited | Bournemouth | 2025 |
| Burwood Sage + Brookridge Ltd | Sunningdale | 2001 |
| Burwood Sage Asset Management Limited | Sunningdale | 2014 |
| Bury Carpets Holdings Ltd | Bury | 2022 |
| Bury Commercial Finance Limited | Bury | 2019 |
| Bury Financial Advisers Limited | Bury | 2008 |
| Bury Gate Ltd | Chichester | 2025 |
| Buryfield Grange Life Planning Limited | Canterbury | 2006 |
| Buryfield Grange Limited | Milton Keynes | 2002 |
| Burylleb Ltd | Brentwood | 2020 |
| Burythorpe Holdings Limited | Malton | 2014 |
| BUS and Coach Limited | Leeds | 2007 |
| BUS Employees Pension Trustees Limited | London | 1998 |
| BUS Investments Limited | Bath | 2014 |
| BUS Stop Holdings Limited | London | 2000 |
| Busanalytics Ltd | Wolverhampton | 2011 |
| Busari Group Limited | Hornchurch | 2023 |
| Busby Finance Ltd | Northampton | 2019 |
| Busby Group Ltd | Bury St Edmunds | 2022 |
| Bush Capital Ltd | Leyton | 2025 |
| Bush Insurance Solutions Ltd | Cleckheaton | 2014 |
| Bush Properties Holdings Limited | Croydon | 2024 |
| Busha Ltd | London | 2019 |
| Bushell & Weightman Consultancy Ltd | Wallsend | 2017 |
| Bushell Enterprises Ltd | Hadleigh | 2023 |
| Bushell Finance Limited | Wisbech | 2017 |
| Bushell Holdings Limited | Wisbech | 2017 |
| Bushes Farm Limited | Monmouth | 2016 |
| Bushfield Holdings Limited | Sale | 2016 |
| Bushido Holdings Limited | Edinburgh | 2025 |
| Bushido Vault Limited | Bournemlouth | 2025 |
| Bushley Investments Limited | Taunton | 2022 |
| Bushmills Limited | London | 2022 |
| Bushra Elzubeir Limited | Colchester | 2025 |
| Bushwillow Homes Limited | Leatherhead | 2023 |
| Bushy Wood Investments Ltd | Edenbridge | 2025 |
| Busines Reutes Ltd | Weston Road,Stafford, | 2021 |
| Business & Enterprise Finance (NE) Ltd | Bradford | 2014 |
| Business & Enterprise Finance Ltd. | Bradford | 1984 |
| Business & Personal Investment Limited | Bourne End | 1999 |
| Business & Property Finance Solutions Limited | Pershore | 2008 |
| Business & Property Solutions Holdings Limited | Darlington | 2022 |
| Business & Tax Loans Limited | Chester | 2024 |
| Business Advisory and Support Services Ltd | Milton Keynes | 2020 |
| Business Advisory Limited | Broxbourne | 2023 |
| Business and Agricultural Finance Ltd | Launceston | 2002 |
| Business and Investment Finance Limited | London | 2016 |
| Business Angel Holding Company Limited | Hexham | 2024 |
| Business Angels Foundation | London | 2017 |
| Business Angels Ltd | Edinburgh | 2023 |
| Business Asset & Vehicle Finance Ltd | Brighton | 2007 |
| Business Asset Finance Limited | Louth | 2018 |
| Business Asset Warranties Ltd | Brighton | 2015 |
| Business Business Limited | Newcastle Upon Tyne | 2020 |
| Business Capital & Finance (ATL) Limited | Belfast | 2019 |
| Business Capital & Finance (DR1) Limited | Belfast | 2019 |
| Business Capital & Finance (SD1) Limited | Belfast | 2020 |
| Business Capital and Finance (PC) Limited | Belfast | 2019 |
| Business Capital and Finance Limited | Belfast | 2016 |
| Business Centre (Woking) Limited | Surrey | 1998 |
| Business Choices Limited | Manchester | 2003 |
| Business Class Financials Limited | Pershore | 2019 |
| Business Commercial Finance Ltd | Halesowen | 2004 |
| Business Comparison Group Limited | Chester | 2020 |
| Business Comparison Hub Limited | Birmingham | 2017 |
| Business Concept Associates Limited | Bedfordshire | 1997 |
| Business Cover UK Ltd | Tonbridge | 2020 |
| Business Credit Services Ltd | London | 2024 |
| Business Credit Solutions Ltd | Leicester | 1999 |
| Business Daily Group (Holdings) Limited | Braunston | 2021 |