| Brown SAW Limited | Durham | 2025 |
| Brown Signs Limited | Surrey | 2005 |
| Brown's Agricultural Machinery Company Limited | Leighton Buzzard | 1962 |
| Brown's Boathouse Limited | Durham | 1976 |
| Brown's Operating System Services Limited | Bickley,Bromley | 1978 |
| Brown's Woodworking Limited | Chippenham | 2003 |
| Brown, Heel and Tear Limited | Newport Pagnell | 2018 |
| Brownbread Bakery Limited | Ingatestone | 2019 |
| Brownchurch Holdings Limited | Upminster | 2001 |
| Brownchurch Ltd | Upminster | 1968 |
| Browne's Chocolates Limited | Plymouth | 2004 |
| Browne's Farm Haylage Ltd | Sion Mills | 2026 |
| Brownell Limited | London | 2002 |
| Brownett Limited | Northampton | 1979 |
| Brownhill Farm Studios Limited | Worthing | 1996 |
| Brownhill Whisky Company Limited | Perth | 2022 |
| Brownhills Glass Company Limited | Walsall | 1980 |
| Brownhirst Joinery Limited | Leeds | 2013 |
| Brownhvsolutions Limited | Blackburn | 2024 |
| Brownie Addict Ltd | London | 2025 |
| Brownie and the Bean Limited | Diss | 2019 |
| Brownie Babe Ltd | St. Ives | 2020 |
| Brownie Bar London Ltd | South Ockendon | 2026 |
| Brownie Bros Ltd | Bridgwater | 2024 |
| Brownie CHE Ltd | West Bromwich | 2022 |
| Brownie Obsession Limited | Southall | 2025 |
| Brownie Stop Ltd | Bolton | 2026 |
| Brownies on the Hill Ltd | Belfast | 2021 |
| Brownieside Cooperage Ltd | Dumfries | 2025 |
| Browniewali Ltd | London | 2025 |
| Browning and Spice Ltd | St. Albans | 2026 |
| Browning Builds Ltd | Fareham | 2026 |
| Browning Joinery (ST Albans) Ltd | London | 2007 |
| Brownings Electric Company Limited | Essex | 1940 |
| Brownings Holdings Limited | Hull | 2006 |
| Brownings Limited | Hull | 1993 |
| Brownings the Bakers Limited | Kilmarnock | 2001 |
| Brownlee Fabrications Limited | Rainworth, Mansfield | 1980 |
| Brownlee Preserves Ltd. | Craigavon | 2014 |
| Brownley Engineering Company Limited | Surrey | 2004 |
| Brownlie Solutions Limited | Kilsyth | 2018 |
| Browns Bedrooms & Kitchens Ltd | Cramlington | 1999 |
| Browns Biltong Ltd | Faversham | 2022 |
| Browns Carpentry & Joinery Ltd | Rotherwas | 2004 |
| Browns Coachworks Limited | Belfast | 1976 |
| Browns Domestic & Commercial Plumbing Ltd | Loughton | 2019 |
| Browns Engineering (GB) Limited | Herts | 2006 |
| Browns Fabrications Limited | Darlington | 2002 |
| Browns Furniture Limited | Hillington | 1973 |
| Browns Garden Buildings Limited | Burnley | 2006 |
| Browns Glass and Glazing Limited | Morden | 2026 |
| Browns Installation & Maintenance Services Limited | Halesowen | 2021 |
| Browns London Ltd | London | 2026 |
| Browns Manufacturing Limited | Sanquhar | 1987 |
| Browns Office Supplies Limited | Cardiff | 2001 |
| Browns Print Limited | Middleton | 2001 |
| Browns Property Maintenance & Building Services Ltd | London | 2024 |
| Brownsolar Ltd | Northampton | 2025 |
| Brownsoriginal Ltd | London | 2021 |
| Brownstone Apparel Limited | Chester | 2025 |
| Browntrout International Ltd | Bristol | 2023 |
| Browse Wood Designs Limited | Otley | 2013 |
| Browski Print Shop Ltd | Hounslow | 2025 |
| Browston Instruments Limited | Great Yarmouth | 2015 |
| Broxap Limited | Newcastle Under Lyme | 1991 |
| Broxburn Bottlers Limited | Broxburn | 1984 |
| Broxton Industries Limited | Cirencester | 1973 |
| Broyce Control Limited | | 1966 |
| Broydy Ltd | London | 2025 |
| Brozen Labs Limited | Bristol | 2018 |
| BRP Composites Limited | Bordon | 2002 |
| BRP Group Limited | Bordon | 2020 |
| BRP Machining Ltd | Bordon | 2009 |
| BRR Electrical Ltd | Beverley | 2025 |
| BRS Electrical London Limited | Great Dunmow | 2016 |
| BRS Hydraulics Limited | Bristol | 2015 |
| BRS Offshore Ltd | Ashington | 2025 |
| BRS PVT Limited | Manchester | 2025 |
| BRS Studio Limited | Harrow | 2018 |
| BRS Visual Merchandising Ltd | Nottingham | 2019 |
| BRT Media Ltd | Rugeley | 2026 |
| BRT Workshops Ltd | Cardiff | 2011 |
| BRU Fabrication Limited | Aberdeen | 2020 |
| BRU House Coffee Company Ltd | London | 2025 |
| Bruberri Limited | London | 2025 |
| Brubl Brewery Ltd | Leamington Spa | 2026 |
| Brucciani (Midlands) Limited | Leicester | 1965 |
| Bruce & Hyslop Limited | Liverpool 20 | 1913 |
| Bruce & Walker Limited | Huntingdon | 1959 |
| Bruce Brymer Limited | Brechin | 2006 |
| Bruce Copen Laboratories Limited | Haywards Heath | 1996 |
| Bruce Cowie Electrical Ltd | Ellon | 2025 |
| Bruce Engineering Services (NI) Limited | Cookstown | 2009 |
| Bruce Fine Properties Ltd | Lincoln | 2004 |
| Bruce Gourmet Ltd | Glasgow | 2024 |
| Bruce Hamilton (Furniture Makers) Limited | Glasgow | 2011 |
| Bruce Kenneth Limited | Huddersfield | 2016 |
| Bruce N Co Limited | Peterlee | 2021 |
| Bruce New Musical Services Limited | Sawbridgeworth | 2018 |
| Bruce Pickles Engineering Limited | Molesey | 1990 |