| Bruce Rafferty Ltd | Kelty | 2024 |
| Bruce Smith Ltd | Peterhead | 2011 |
| Bruce Usher Ltd | London | 2015 |
| Brucecarey Ltd | Llandudno | 2026 |
| Brucehaven Brewery Ltd. | Dunfermline | 2016 |
| Brucespeed Limited | Fife | 2003 |
| Bruci Home Ltd | Wembley | 2025 |
| Brucom Distribution Limited | Hixon, Stafford | 2003 |
| Bruegel Office Ltd | Wirral | 2025 |
| Bruehaus Projekt Ltd | Bury St. Edmunds | 2023 |
| Bruel & Kjaer UK Limited | Royston | 2000 |
| Bruel & Kjaer VTS Limited | Royston | 1981 |
| Bruening Group UK Ltd. | Whatton In The Vale | 2019 |
| Bruh Snacks Ltd | Dunfermline | 2025 |
| Bruhaha Ltd | Bristol | 2021 |
| Bruichladdich Distillery Company Limited | Islay | 2000 |
| Bruin Biometrics Europe Limited | Bristol | 2013 |
| Bruker Daltonics Limited | Coventry | 1999 |
| Bruker JV UK Ltd | Coventry | 2008 |
| Bruker UK Limited | Coventry | 1967 |
| Brumac Engineering Limited | Dundee Technology Park | 1991 |
| Brume London Ltd | Birmingham | 2026 |
| Brumeclo Ltd | Nottingham | 2025 |
| Brumfit Factory Equipment Limited | Bradford | 2002 |
| Brummie & Brew Co Ltd | Birmingham | 2023 |
| Brumz Kitchens & Bedrooms Ltd | Birmingham | 2025 |
| Brun ET Noir Ltd. | Chislehurst | 2012 |
| Bruna Tolomeli Ltd | Romford | 2021 |
| Brunch @ Biler’S Ltd | Sevenoaks | 2019 |
| Brunch BAE Ltd | Northampton | 2022 |
| Brunch Cafe and Bakery Ltd | Chigwell | 2026 |
| Brunchers Fine Foods Ltd | Bakewell | 2024 |
| Brunel Computer Services Limited | Southend-On-Sea | 1997 |
| Brunel Direct Limited | Bristol | 2016 |
| Brunel Engineering (Southern) Ltd | Fareham | 2013 |
| Brunel Engraving Company Limited | Clevedon | 1991 |
| Brunel Enterprises Limited | Southampton | 1939 |
| Brunel Healthcare Manufacturing Limited | Derbyshire | 2002 |
| Brunel Marine Coatings Ltd | Bristol | 2019 |
| Brunel Marine Coatings Sales Limited | Wolverhampton | 2015 |
| Brunel Solutions Ltd | London | 2026 |
| Brunel Steel Buildings Ltd | Newport | 2025 |
| Brunel Steel Services Limited | Newport | 1977 |
| Brunel Watch Company Ltd | London | 2025 |
| Brunlea Press Limited | Hyde | 2023 |
| Bruno Boulay Ltd | Barkham | 2008 |
| Bruno's Limited | London | 1971 |
| Brunswick Ceramic Services Limited | Stoke-On-Trent | 2006 |
| Brunswick Electrical Services Limited | Ipswich | 2009 |
| Brunswick Furniture Limited | Helensburgh | 2009 |
| Brunswick Ironworks Limited | Caernarfon | 2006 |
| Brunswick Press Limited | Potters Bar | 2020 |
| Brunswick Tooling Limited | Brighouse | 1998 |
| Bruntlands Ltd | Elgin | 2012 |
| Brunton Electrical Services Ltd | Newcastle Upon Tyne | 2025 |
| Brunton Shaw UK Limited | Nottinghamshire | 2000 |
| Brunton's Propellers Limited | Dorchester | 1919 |
| Bruntons Aero Products Limited | Mitcham | 1895 |
| Brupart Limited | Mayfield | 1993 |
| Brurichie (UK) International Group Limited | West Midlands, England, | 2022 |
| Bruscompany Limited | Sutton | 2026 |
| Brush & Beyond Artistry Limited | Oldham | 2025 |
| Brush Closures Limited | Manchester | 2021 |
| Brush Electrical Machines Limited | Ashby-De-La-Zouch | 1910 |
| Brush Europe Limited | London | 2017 |
| Brush Farriery Services Limited | Cheltenham | 2005 |
| Brush Laundry Ltd | London | 2025 |
| Brush N Bloom Limited | Porth | 2025 |
| Brush Technology Limited | Newcastle Upon Tyne | 1990 |
| Brush Transformers Limited | Loughborough | 1957 |
| Brushes North West (2001) Limited | Stockport | 2001 |
| Brushi Limited | London | 2023 |
| Brushware (U.K.) Limited | Birmingham | 1985 |
| Brush’N’Play Ltd | Manchester | 2026 |
| Brusselos Ltd | London | 2024 |
| Brutal Finesse Forge Ltd | Southport | 2025 |
| Brute Equipment Ltd | Peterhead | 2024 |
| Brute Force Fitness Ltd | Waltham Cross | 2024 |
| Bruton's Limited | West Yorkshire | 1998 |
| Bruuk Coffee Ltd | London | 2022 |
| Bruynzeel Storage Systems Limited | Burgess Hill | 1984 |
| Brws Technology Ltd | London | 2026 |
| Bry-Kol (FM) Limited | Stoke-On-Trent | 2013 |
| Brya Ltd | London | 2026 |
| Bryad Print Finishing Services Limited | Nottingham | 1982 |
| Bryan Automotives Limited | Pudsey | 2018 |
| Bryan Donkin Valves Limited | Chesterfield | 1997 |
| Bryan Fisk Caravan Repairs Limited | Bridlington | 2019 |
| Bryan Green Carpentry & Construction Ltd | Bromley | 2023 |
| Bryan Green Marketing Limited | Steyning | 1978 |
| Bryan Haddow Ltd | Cumbria | 2003 |
| Bryan Hanlon Bronzes Limited | Wiltshire | 2007 |
| Bryan Hoggarth Limited | Lancaster | 1999 |
| Bryan Turner Kitchens Ltd | Burnley | 2023 |
| Bryans Domestic Appliance Services Ltd | Middlewich | 2008 |
| Bryans Electrical Services Ltd | Trillick | 2014 |
| Bryant Carpentry & Construction Ltd | Westbury | 2022 |
| Bryant Electrical Limited | Estate Strood | 1988 |
| Bryant Electrical (South West) Limited | Bristol | 2014 |
| Bryant Plastics Ltd | Keighley | 2012 |