| Brindley Fabrications Ltd | Lichfield | 2024 |
| Brindley Services Ltd | Weybridge | 2021 |
| Brindleys (Rural) Ltd | East Bridgford | 2011 |
| Brine Solutions Ltd | Henley On Thames | 2018 |
| Brineflow Limited | Great Yarmouth | 2011 |
| Brinell Vision Ltd | St. Andrews | 2010 |
| Brinelora Studio Limited | Edinburgh | 2026 |
| Brinewaves Ltd | Dundee | 2025 |
| Brinewood Ltd | Northwich | 2020 |
| Bring Energy Limited | London | 1980 |
| Bring IT Back Into Britain Limited | Portsmouth | 2020 |
| Bringe & Go Limited | London | 2025 |
| Brington Suit Co Ltd | West Midlands, England | 2025 |
| Brink & Thomas (Engineering) Limited | London | 1988 |
| Brinkburn Street Brewery Ltd | Newcastle Upon Tyne | 2015 |
| Brinkley Aircraft Services Limited | Shefford | 1997 |
| Brinscall Little Dairy Limited | Chorley | 2023 |
| Brinsea Products Limited | Weston-Super-Mare | 1976 |
| Brinsmoor Solutions Limited | Nottingham | 2000 |
| Brinton Healthcare UK Ltd | Runcorn | 2013 |
| Brinton Products Limited | | 2003 |
| Brintons Carpets Limited | Kidderminster | 2011 |
| Brio Fibre Solutions Ltd | Stockbridge | 2026 |
| Brio Mate UK Ltd | London | 2022 |
| Brioche Brothers Liverpool Ltd | Liverpool | 2025 |
| Brioche Ltd | Gillingham | 2025 |
| Brioche Pasquier U.K. Limited | Milton Keynes | 2000 |
| Briodux Limited | Harrogate | 2014 |
| Briotech UK Ltd | London | 2022 |
| Bripak Limited | Manchester | 2007 |
| Bripat Engineering Limited | Luton | 2007 |
| Bripol (UK) Limited | Birmingham | 1999 |
| Briq Coffee Roaster Ltd | London | 2025 |
| Brirish Limited | Cookstown | 2015 |
| Brisant Secure Ltd | Dewsbury | 2011 |
| Brisbay Limited | Newcastle Upon Tyne | 1983 |
| Brise Soleil UK Ltd | Worthing | 2021 |
| Brisfix Ltd | Salisbury | 2020 |
| Brish Imaging Ltd | Southgate | 2025 |
| Brisk Group Ltd | South Croydon | 2020 |
| Brisk Steel Co., Ltd | Beckenham | 2023 |
| Brisons (Fabrications) Company Limited | 33 Wellington Street Leeds | 1973 |
| Brissco (Equipment) Limited | Bristol | 1948 |
| Brist Drive Systems UK Ltd | Cwmbran | 2024 |
| Bristar Corporation Limited | Beckenham | 2022 |
| Bristol & District Carpentry Ltd | Wells | 2016 |
| Bristol (UK) Limited | Leighton Buzzard | 1992 |
| Bristol and South West KOI Ltd | Bristol | 2026 |
| Bristol Autism Centre C.I.C. | Bristol | 2023 |
| Bristol Banners & Signs Limited | Bristol | 2000 |
| Bristol Bespoke Boxes Limited | Bristol | 2020 |
| Bristol Blue Glass Limited | Bath | 1990 |
| Bristol Bluegreen Limited | Bristol | 2013 |
| Bristol Bread Ltd | Newport | 2024 |
| Bristol Brewing Company Limited | Bristol | 2002 |
| Bristol Brick Company Limited | Bristol | 2022 |
| Bristol Buccaneer Limited | London | 2019 |
| Bristol Business Forms (Holdings) Limited | Radstock | 2023 |
| Bristol Business Forms Limited | Midsomer Norton | 2009 |
| Bristol Carpentry Contractor Ltd | Bristol | 2024 |
| Bristol Cars Limited | South Street | 2011 |
| Bristol Channel Ships Limited | Lydney | 2014 |
| Bristol Classic Boat Company Limited | Bristol | 2004 |
| Bristol Classic Car Restorations Ltd | London | 2015 |
| Bristol Concrete & Pumping Ltd | Bristol | 2024 |
| Bristol Concrete Ltd | Bristol | 2022 |
| Bristol Concrete Studio Ltd | Tadley | 2020 |
| Bristol Confectionery Company Limited | Taunton | 2012 |
| Bristol County Caravans Limited | Bristol | 2009 |
| Bristol Cushion Company Limited | Bath | 2013 |
| Bristol Dental Innovations Limited | Bristol | 2026 |
| Bristol Design Forge Ltd | Bristol | 2013 |
| Bristol EV Cars Limited | London | 2025 |
| Bristol Fabrications Limited | Cardiff | 2020 |
| Bristol FAN Company Limited(The) | Bristol | 1946 |
| Bristol Ferrys Limited | Bristol | 2012 |
| Bristol Fighter Limited | London | 2020 |
| Bristol Fine Furniture Ltd | Bristol | 2007 |
| Bristol Fire Limited | Banbury | 2011 |
| Bristol Fruit Sales (Bananas) Limited | Bristol | 2006 |
| Bristol Furnishings Ltd | Bristol | 2022 |
| Bristol Gear Company Limited | Willenhall | 1996 |
| Bristol Health Ltd | Bristol | 2019 |
| Bristol Home Improvements Ltd | Bristol | 2020 |
| Bristol Hot Tubs Ltd | Bristol | 2014 |
| Bristol Hydrogen Boats Limited | Bristol | 2010 |
| Bristol Ice Skate Sharpening Ltd | Bristol | 2023 |
| Bristol Inkjet Limited | Bath | 2018 |
| Bristol Kitchens and Building Ltd | Bristol | 2019 |
| Bristol Laboratories Limited | Berkhamsted | 1997 |
| Bristol Maid Limited | Dorset | 2000 |
| Bristol Medical Pro Limited | Bristol | 2010 |
| Bristol Pastry Kitchen Ltd | London | 2025 |
| Bristol PAT Testing Ltd | Bristol | 2018 |
| Bristol Precision (SW) Limited | Bristol | 2024 |
| Bristol Print Centre Limited | Bristol | 2016 |
| Bristol Print Hub Ltd | Bristol | 2014 |
| Bristol Printhouse Limited | Bristol | 1994 |
| Bristol Rebar Limited | Clevedon | 2020 |
| Bristol Reclaimed Timber & Furniture Ltd | Bristol | 2024 |