| Billy Footwear UK Ltd | London | 2026 |
| Billy Fountain Limited | Old Amersham | 2011 |
| Billy Franks Ltd | London | 2015 |
| Billy Grant Offshore Ltd | Cleethorpes | 2019 |
| Billy Greaves Carpentry Limited | London | 2026 |
| Billy Health Ltd | London | 2025 |
| Billy Online Gifts Limited | Chorley | 2022 |
| Billy Ruffian Limited | Olney | 2018 |
| Billy Strachan Ltd. | Fraserburgh | 2010 |
| Billy Tannery Limited | Guildford | 2017 |
| Billy the Hot TUB GUY Limited | Hull | 2020 |
| Billy's Bikes Ltd | Bristol | 2020 |
| Billyshots Ltd | Twickenham | 2025 |
| Biloxi Global Ltd | London | 2008 |
| Bilspoke Ltd | Manchester | 2026 |
| Bilstein UK Ltd | Bolton | 2005 |
| Bilston Sheet Metal Workers Limited | 67 Newhall Street | 1935 |
| Bilstrong Limited | Beaconsfield | 2023 |
| Bilt Hamber Laboratories Ltd | Chelmsford | 2007 |
| Biltmore Business Services Limited | Isle Of Wight | 1973 |
| Bilton Auto Accessories Ltd | Bradford | 2024 |
| Bilton Blinds Limited | Hull | 2022 |
| Bilton Cremation Services Ltd | Morpeth | 2020 |
| Bilton Equestrian Limited | London | 2026 |
| Biltong Bites Limited | Bristol | 2016 |
| Biltong Bokkie Ltd | Southampton | 2017 |
| Biltong Buddy Ltd | Kendal | 2025 |
| Biltong Direct Ltd | Basildon | 2025 |
| Bilz Tool Limited | Coventry | 1981 |
| BIM Media Ltd | Neath | 2023 |
| BIM United Kingdom Limited | Lancashire | 1970 |
| Bim's Delight Ltd | Grays | 2018 |
| BIM+ Engineering Ltd | London | 2026 |
| Bima by C Ltd | London | 2020 |
| Bimak UK Limited | Eskbank | 2013 |
| Bimber Distillery Ltd | London | 2011 |
| Bimble Industries Ltd | Shrewsbury | 2023 |
| Bimim Foods Limited | Romford | 2017 |
| Bimim Materials Limited | Birmingham | 2023 |
| Bimini Animal Health Limited | Guildford | 2025 |
| BIMINI4BOATS Ltd | Fareham | 2019 |
| Bimma Entertainment Limited | London | 2024 |
| Bimmer Engineering Ltd | Warrington | 2024 |
| Bimo.Handmade Ltd | Stratford-Upon-Avon | 2021 |
| Bimola Ltd | London | 2020 |
| BIN Ferdous Trade International Ltd | London | 2025 |
| BIN Garden Ltd | Berkshire | 2001 |
| BIN Khalid Enterprises Ltd | London | 2022 |
| BIN Masters (Kent) Limited | Chatham | 2009 |
| Bin-Safe Limited | Huddersfield | 2022 |
| Bina Fashion Limited | Manchester | 2018 |
| Bina Robotics Ltd | London | 2021 |
| Bina Shoes Limited | London | 1978 |
| Binani Technologies Ltd | London | 2022 |
| Binary Neon Engineering Ltd | Macclesfield | 2024 |
| Binary Stag Ltd | Kington | 2025 |
| Binbil Universal Concept Limited | Salford | 2024 |
| Bind-A-Tex Limited | Chorley | 2004 |
| Binder Creations Limited | Derby | 2007 |
| Binder Packs Ltd | Rugby | 2025 |
| Bindery Machinery Services & Sales Ltd. | Macmerry | 2009 |
| Bindery Machinery Services Limited | Tranent | 1993 |
| Bindethics Ltd | Leeds | 2021 |
| Bindingbazaar Limited | Arsenal, Woolwich | 1978 |
| Bindoneright Limited | Huddersfield | 2024 |
| Bindra Jewellers Ltd | Southall | 2026 |
| Binfield Printers Limited | West Byfleet | 1975 |
| Bing Bong Property Services Ltd | Bristol | 2017 |
| Bingham Rail(Ds) Limited | Chesterfield | 2010 |
| Binghams (Ruscombe) Limited Limited | London | 2007 |
| Binghams Food Limited | Sheffield | 2007 |
| Binghis Boutique Limited | London | 2010 |
| Bingley Brewery Limited | Bingley | 2013 |
| Bingley Engineering Limited | Carnforth | 2004 |
| Bingley Fabrications Limited | Sheffield | 2004 |
| Bingley Textile Supplies Limited | Keighley | 2004 |
| Bingley Window and Glass Company Limited | Keighley | 2010 |
| Bingo Bass Records Limited | Chelmsford | 2018 |
| Bingo Electric Limited | Coventry | 2022 |
| Bingo’S Kitchen Ltd | Kingston Upon Thames | 2025 |
| Bini Brew Co Ltd | Ilkley | 2020 |
| Bini Fine Foods Limited | Radstock | 2016 |
| Bink Coffee Limited | Spalding | 2025 |
| Bink Outdoor Limited | Cardiff | 2018 |
| Binks U.K. Limited | Dorset | 2011 |
| Binley Dental Supplies Limited | Coventry | 2024 |
| Binley Solid Surface Limited | Coventry | 2022 |
| Binmar Ltd | Cambridge | 2025 |
| Binney & Smith (Europe) Limited | Woking | 1916 |
| Binpin (UK) Limited | Greenock | 2012 |
| Bins-N-Benches Limited | Lancashire | 2005 |
| Binstead Designs Limited | Nottingham | 1995 |
| Bint-E-Saifullah Ltd | London | 2025 |
| Bintangchip Semicon Manufacture Limited | Newbury | 2025 |
| Binthus Design Ltd | London | 2020 |
| Binti Marine Holdings Limited | Southampton | 2019 |
| Bintious Total Beauty Ltd | London | 2026 |
| Binyam Service Ltd | Leeds | 2018 |
| Binzhou Ziyu New Material Co., Ltd | Gillingham | 2023 |
| Binzruz Aquatek Ltd | Darlington | 2021 |