| Bandama Holdings Ltd | Manchester | 2024 |
| Bandb Transformations Limited | Cobham | 2026 |
| Bandbrand Holdings Ltd | Widnes | 2024 |
| Bandenia Capital Investment Public Limited Company | London | 2010 |
| Bandidos Investment Club Ltd | Stafford | 2025 |
| Bandipur Ltd | London | 2022 |
| Bandol Capital Limited | Watford | 2014 |
| Bandon Holdings Limited | London | 2004 |
| Bandron Limited | West Lothian | 1983 |
| Bandrum Holdings Limited | By Dunfermline | 2026 |
| Bandtest Limited | Newnham | 1992 |
| Bandung UK Capital Limited | Grantham | 2014 |
| Bandwagon Holdings Limited | London | 2025 |
| Bandwidth Holdings Ltd | Stoke-On-Trent | 2025 |
| Bandwidth Investments Limited | London | 2023 |
| Bandwith Ventures Limited | Bexhill-On-Sea | 2011 |
| Bane Family Holdings Ltd | Witney | 2026 |
| Baneberry Finance Limited | Twickenham | 2010 |
| Banerjee Investment Services Ltd | Manchester | 2024 |
| Banfeinni Limited | London | 2026 |
| Banfield Holding Company Ltd | Hove | 2020 |
| Banga Holdings Limited | Manchester | 2024 |
| Bangash House Limited | Eastbourne | 2014 |
| Banger Communication Ltd | London | 2025 |
| Bangiven Holdings Ltd | Londonderry | 2026 |
| Bangladesh in the World Ltd | Ilford | 2025 |
| Bangladeshi Italian Association UK Ltd | London | 2023 |
| Bango Group Holdings Ltd | St Neots | 2025 |
| Bani Associates Limited | Harrow | 1992 |
| Bani Hashim Holdings Limited | Harrow | 2024 |
| Baniachal Holdings Limited | Liverpool | 2023 |
| Banian Capital Management Ltd | Poole | 2025 |
| Banico Holdings Limited | Manchester | 2017 |
| Banicorp Ltd | London | 2018 |
| Banif Factoring Ltd | Cardiff | 2021 |
| Banijay Holding UK Limited | London | 2026 |
| Banijay Kids & Family (Holding) Limited | London | 2022 |
| Banjavilfx Ltd | Wolverhampton | 2026 |
| Banjo Paraplanning Limited | Atherstone | 2016 |
| Banjym Holdings Ltd | Bradford | 2018 |
| Bank Farm Holdings Limited | Kings Lynn | 2023 |
| Bank House Care Homes Holdings Limited | Harrow | 2021 |
| Bank House Consultants Ltd | Todmorden | 2003 |
| Bank House Investment Management Limited | Grimsby | 2006 |
| Bank Leumi (U.K.) P.L.C. | London | 1959 |
| Bank Mandiri (Europe) Limited | London | 1999 |
| Bank of Africa United Kingdom PLC | London | 2004 |
| Bank of America (Lbac) Pension Trustees Limited | London | 2017 |
| Bank of America UK Retirement Plan Trustees Limited | London | 1997 |
| Bank of Baroda (UK) Limited | London | 2017 |
| Bank of Beirut (UK) Ltd | London | 2002 |
| Bank of Ceylon (UK) Limited | London | 2008 |
| Bank of China (UK) Limited | London | 2007 |
| Bank of China International (UK) Limited | London | 1996 |
| Bank of China International Holdings Limited | London | 1996 |
| Bank of England Alternative Liquidity Facility Limited | London | 2018 |
| Bank of England Asset Purchase Facility Fund Limited | London | 2009 |
| Bank of Georgia Group Limited | London | 2024 |
| Bank of Ireland (UK) PLC | London | 2009 |
| Bank of Ireland Britain Holdings Limited | Bristol | 1986 |
| Bank of Ireland UK Holdings PLC | | 1967 |
| Bank of London and the Middle East PLC | London | 2006 |
| Bank of Scotland Equipment Finance Limited | London | 1977 |
| Bank of Scotland PLC | | 2007 |
| Bank of Scotland Structured Asset Finance Limited | London | 1988 |
| Bank of the Philippine Islands (Europe) PLC | London | 2006 |
| Bank Saderat PLC | | 1973 |
| Bank Sepah International PLC | | 2001 |
| Bank View Northern Limited | Liverpool | 2013 |
| Bank View Property Finance Limited | Wallingford | 2022 |
| Bankcheck Limited | Belfast | 2003 |
| Bankend Farm Holdings Ltd | Ventnor | 2021 |
| Bankers Life Limited | Dewsbury | 2020 |
| Bankfield Protect Limited | Leicester | 2014 |
| Bankfield View Ltd | Kilmarnock | 2020 |
| Bankfield Yard Apartments Limited | Halifax | 2021 |
| Bankfoot Financial Services Limited | Huddersfield | 2003 |
| Bankhall Support Services Limited | York | 1993 |
| Banking & Corporate Finance Consultants Limited | Tunbridge Wells | 2000 |
| Banking Concepts Limited | Gorebridge | 2007 |
| Bankingly Ltd | London | 2017 |
| Bankinter Group UK Ltd | London | 2025 |
| Banko Financial Group Limited | London | 2021 |
| Bankoro Ltd | London | 2017 |
| Bankruptcy Advisory Service Limited | Knaresborough | 2003 |
| Banks Capital Limited | Bournemouth | 2020 |
| Banks Claims Group Limited | St Asaph | 2018 |
| Banks Sheridan Wealth Limited | Crewe | 2021 |
| Banks Wood and Partners Holdings Limited | Brentwood | 2022 |
| Banks-Dunnell Wealth Management Ltd | Norwich | 2012 |
| Bankserve Credit Limited | London | 2022 |
| Bankside Holdings Limited | Bromham | 2021 |
| Bankwell Holdings Limited | Manchester | 2025 |
| Bankwood Meats Holdings Limited | Doncaster | 2019 |
| Bannard Insurance Brokers Ltd | Thame | 2020 |
| Bannatyne Finance Limited | Darlington | 2019 |
| Banncoff Ltd | Ballymena | 2026 |
| Bannel Dairy Farm Limited | Chester | 2023 |
| Banner Fibre Holdco Limited | London | 2024 |
| Banner Holdings (Halnaby) Limited | Darlington | 2018 |