| Brennans Irish Linens Ltd | Belfast | 2024 |
| Brennenstuhl UK Ltd | London | 2021 |
| Brenntag UK Limited | Leeds | 2004 |
| Brenron Ltd | Leamington Spa | 2020 |
| Brenson Plant Limited | Droitwich | 1982 |
| Brent Creative Design & Print Limited | Crawley | 2024 |
| Brent Design Services Ltd | East Hanningfield | 2009 |
| Brent Engineering Company Limited | Highbridge | 2007 |
| Brent Group International Limited | Chancery Lane | 2017 |
| Brent Measurement Technology Limited | South Brent | 2002 |
| Brenton Chocolatier Ltd | Swindon | 2023 |
| Brentwood Boilers & Air Conditioning Limited | Brentwood | 2014 |
| Brentwood Brewing Company Limited | Brentwood | 2006 |
| Brentwood Build Makers Ltd | Brentwood | 2019 |
| Brentwood Embroidery Limited | Brentwood | 2008 |
| Brentwood Europe Ltd | Blisworth | 2015 |
| Brentwood Joinery Limited | Brentwood | 1979 |
| Brentwood Kitchen & Interiors Company Limited | Brentwood | 2016 |
| Brentwood Metalworks Ltd | Brentwood | 2023 |
| Breo Ltd | St. Andrews | 2020 |
| Brereton Installations Limited | Heywood | 2022 |
| Brescia Design Limited | Barnet | 2024 |
| Bresstech Electric Automotive Ltd | Eastbourne | 2019 |
| Bret Lewis Contracting Ltd | Shaftesbury | 2026 |
| Bretherton Coachworks Limited | Chorley | 2004 |
| Brethewellhq Ltd | Liverpool | 2025 |
| Bretmont Limited | London | 1988 |
| Bretmore Solutions Limited | West Midlands, England | 2026 |
| Breton International Limited | Colwyn Bay | 2001 |
| Brett Automotive Ltd | Twickenham | 2025 |
| Brett Concrete Limited | Canterbury | 1959 |
| Brett Developments Limited | Canterbury | 1958 |
| Brett in 3D Ltd | Church Stretton | 2026 |
| Brett Martin Daylight Systems Limited | Coventry | 1975 |
| Brett Martin Limited | Co Antrim | 1972 |
| Brett Ruth Auto Ltd | Basingstoke | 2012 |
| Brett-Sillifant Ltd | Oakington | 2021 |
| Brettell Brothers Limited | Stourbridge | 2010 |
| Bretton Architectural Limited | Chester | 1990 |
| Bretton Green Limited | Stamford | 2013 |
| Brettonwoods UK Limited | Coventry | 2024 |
| Bretvents Limited | Eastbourne | 1960 |
| Brevan Ltd | London | 2025 |
| Brevial Vitality Balance Limited | Birmingham | 2024 |
| Brevity Anderson Limited | London | 2016 |
| Brew & Bloom Tea Ltd | Radstock | 2025 |
| Brew & Crust Ltd | Kingston Upon Thames | 2026 |
| Brew 61 Limited | Bromsgrove | 2021 |
| Brew and Blade Ltd | London | 2025 |
| Brew Barn Ltd | Coventry | 2023 |
| Brew Bros Ltd | Sandown | 2019 |
| Brew by Numbers Ltd. | London | 2012 |
| Brew Crew Coffee Limited | Thatcham | 2021 |
| Brew DEN Ltd | Cradley Heath | 2023 |
| Brew Dynamics Ltd | Harlow | 2012 |
| Brew Garage Services Limited | Sutton Common | 1993 |
| Brew Mood UK Ltd | London | 2024 |
| Brew Portfolio Limited | London | 2025 |
| Brew Shed Beers Limited | Dunfermline | 2016 |
| Brew Stuff Limited | Molash, Canterbury | 2022 |
| Brew T Way Ltd | Northwood | 2020 |
| Brew Technician UK Ltd | Chesterfield | 2025 |
| Brew Toon Ltd. | Peterhead | 2013 |
| Brew Union UK Ltd | Beckenham | 2021 |
| Brew York Brewery Ltd | York | 2020 |
| Brew York Limited | York | 2015 |
| Brewbarn Beverage Innovations Global Ltd | Hertford | 2026 |
| Brewbatley Ltd | Batley | 2019 |
| Brewberry Holdings Limited | Stroud | 2024 |
| Brewberry Limited | Chippenham | 2018 |
| Brewboard Limited | Cambridge | 2016 |
| Brewbox Systems Ltd | Braunton | 2016 |
| Brewchange Group Ltd | London | 2025 |
| Brewco Ltd | Coventry | 2023 |
| Brewcrew Ltd | Faversham | 2025 |
| Brewd.Sale Ltd | Sale | 2026 |
| Brewdini Coffee Ltd | Bilston | 2025 |
| Brewdog PLC | Glasgow | 2006 |
| Brewed by Ayala Ltd | London | 2024 |
| Brewer & Bunney Limited | Barnsley | 1998 |
| Brewer Engineering Ltd | Southampton | 2024 |
| Brewer Metalcraft Limited | Chichester | 1994 |
| Brewers Blend Ltd | Pinner | 2023 |
| Brewers Folly Brewery Ltd. | Wimborne | 2017 |
| Brewery Dispense Installations Ltd | Lytham St. Annes | 2016 |
| Brewery Enterprises Limited | London | 2019 |
| Brewery Process Services Limited | Burton Upon Trent | 1995 |
| Brewery Technical Dispense Service Limited | Keston | 2007 |
| Brewferm Ltd | Richmond | 1997 |
| Brewhaha! Ltd | Totnes | 2020 |
| Brewhive Ltd | Bristol | 2023 |
| Brewhouse Brewery Limited | London | 2019 |
| Brewhouse Spirits Limited | Cirencester | 2018 |
| Brewin' Coffee Limited | Birmingham | 2026 |
| Brewin' Stuff Ltd | Liphook | 2020 |
| Brewing & Engineering Consultancy Services Limited | London | 2014 |
| Brewing Brothers Brewery Ltd | Hastings | 2020 |
| Brewing Change CIC | London | 2024 |
| Brewing Collective Ltd | Knutsford | 2011 |
| Brewing Works Limited | Stevenage | 2021 |