| Banbury Powder Coating Limited | Banbury | 2003 |
| Banbury Print & Design Limited | Banbury | 2003 |
| Banbury Racing Limited | Banbury | 1967 |
| Banbury Water Softeners Ltd. | Abingdon | 2003 |
| Banbury Windows Limited | Bewdley | 1986 |
| Banchory Precast Limited | Banchory | 2010 |
| Bancombe Joinery Limited | Somerton | 2014 |
| Bancroft Carpentry & Build Limited | Swansea | 2021 |
| Bancroft Heath Building Supplies Ltd | London | 2021 |
| Band of Beans Ltd | London | 2022 |
| Band of Joiners Ltd | Dagenham | 2019 |
| Band Pass Limited | Godalming | 2004 |
| Band-It Company Limited | London | 1963 |
| Band-It Labels Limited | Huntingdon | 1997 |
| Banda Sportswear Limited | Cambridge | 2015 |
| Bandit Bakery Ltd | Aberdeen | 2019 |
| Bandit Creative Ltd | Basingstoke | 2016 |
| Bandit Plates Ltd | Belfast | 2025 |
| Bandvulc Tyres Ltd | Ivybridge | 1978 |
| Bandwidth Energy Limited | Glasgow | 2017 |
| Bane Wind Ltd | Wigan | 2013 |
| Baneco Group Limited | Harrow | 2024 |
| Banfield Foods Ltd | London | 2024 |
| Banfield Joinery Ltd | Bristol | 2023 |
| Bang Average Shooters Ltd | Sheffield | 2025 |
| Bang Industries Ltd | St. Leonards-On-Sea | 2025 |
| Bang on Food Company Limited | Beoley, Redditch | 2023 |
| Bang on IT Ltd | Falkirk | 2025 |
| Bang on Print & Design Ltd | Lemington | 2012 |
| Bang on Prints Limited | Bath | 2022 |
| Bang on Sets Ltd | London | 2018 |
| Bang on Style Ltd | Clydebank | 2026 |
| Bang Products Ltd | Haslemere | 2007 |
| Bang the Elephant Brewing Co Ltd | Nottingham | 2017 |
| Bang Tidy Clothing Limited | Barnsley | 2011 |
| Bang-On Brewery Limited | Bridgend | 2016 |
| Banga Bois Limited | London | 2022 |
| Banga Curries Ltd | Manchester | 2025 |
| Bangalore Group Ltd | London | 2024 |
| Bangash and Sons Ltd Limited | Dagenham | 2024 |
| Bangham & Scratchett of London Limited | Ashford | 2018 |
| Bangin Bites & Brew Limited | London | 2023 |
| Bangin' Coffee Ltd | Tipton | 2026 |
| Bangin' Foods Limited | Leicester | 2025 |
| Banging Seitan Limited | London | 2025 |
| Bangkok Brew Ltd | Morden | 2026 |
| Bangkok Tea (UK) Ltd | London | 2024 |
| Bangla Voice Limited | Birmingham | 2014 |
| Banglapage & RL TV Ltd | London | 2023 |
| Bangle.Sweets Ltd | London | 2024 |
| Bangor Steel Fabrications Limited | Belfast | 2009 |
| Bangright IP Limited | London | 2024 |
| Bangright Limited | London | 2023 |
| Bangson International Co., Limited | Beckenham | 2021 |
| Bangsooni Ltd | Surrey | 2024 |
| Bangxiang Wood Industry Limited | London | 2025 |
| Banham Poultry (2018) Ltd | Birmingham | 2018 |
| Banham Poultry Limited | Manchester | 2010 |
| Banham Vehicle Services Limited | Norwich | 2002 |
| Banhs Project Ltd | London | 2023 |
| Baniez Ltd | London | 2022 |
| Banjokogee Media Ltd | Rainham | 2025 |
| Bank House Beverages Limited | Wisbech | 2025 |
| Bank Top Brewery Limited | Bolton | 2004 |
| Bankfarm Trailers Limited | Almondsbury | 1995 |
| Bankfoot Chair Frames Limited | Bradford | 2017 |
| Bankhead Control Systems Ltd | Aberdeen | 2023 |
| Bankhead Electrical Services Limited | Aberdeen | 2016 |
| Bankhead Wood Machining Ltd | Philpstoun | 2024 |
| Banks Amenity Products Limited | Market Harborough | 1961 |
| Banks Bespoke Builds. Limited | Hoddesdon | 2024 |
| Banks Byrne Limited | Sawston | 1996 |
| Banks Carpentry & Construction Ltd | Plymouth | 2021 |
| Banks Carpentry Limited | London | 2020 |
| Banks Commercials Limited | Preston | 2023 |
| Banks Specialist Covers Limited | Salisbury | 1999 |
| Bankside Coffee Rubiaceae Limited | Leeds | 2026 |
| Bankside Decor Ltd | Stockport | 2020 |
| Bankside Furniture Systems Limited | | 1973 |
| Bankside Industrial Engineers Limited | Driffield | 1974 |
| Bankside Patterson Limited | Manchester | 1959 |
| Bankside Revivals Limited | Birchington | 2017 |
| Bankview Ceramics Ltd | Gateshead | 2010 |
| Bankwood Meats Limited | Doncaster | 2004 |
| Banlaw Systems (Europe) Ltd. | Glasgow | 2000 |
| Bann Architectural Systems Limited | Banbridge | 2010 |
| Bann Engineering Co. Limited | Co Londonderry | 1981 |
| Bann Side Foods Ltd | Omagh | 2021 |
| Bannatyne Ltd. | Bathgate | 1999 |
| Bannbross Limited | West Mid.Lands | 1976 |
| Banner & Stark Ltd | Musselburgh | 2025 |
| Banner Fluid Power Limited | Bedford | 2002 |
| Banner Joinery Ltd | Solihull | 2021 |
| Banner Maintenance Group Ltd | Cambridge | 2026 |
| Banner Press Limited | Southampton | 2023 |
| Banner Printing Service Ltd | Birmingham | 2025 |
| Banner Signs Limited | Wisbech | 2024 |
| Banner Tension Solutions Limited | Thirsk | 2020 |
| Bannerkwik Glasgow Ltd | Glasgow | 2026 |
| Bannerkwik Limited | Glasgow | 2014 |