| Brighton Lofts Limited | Brighton | 2025 |
| Brighton Massage Collective Ltd | Brighton | 2025 |
| Brighton Printing Online Ltd | Portslade | 2020 |
| Brighton Publishing Company Limited | East Sussex | 1990 |
| Brighton Rocks! Cufflinks Ltd | Brighton | 2023 |
| Brighton Sausage Co Ltd | Brighton | 2018 |
| Brighton Solutions Limited | London | 2022 |
| Brighton Spirits Company Ltd | Brighton | 2013 |
| Brighton Sunblinds Ltd | Brighton | 2008 |
| Brighton Systems Limited | Sussex | 1991 |
| Brighton Vinyl Limited | Deal | 2023 |
| Brighton Wooden IT BE Nice Limited | Brighton | 2022 |
| Brightonprinting Ltd | Small Dole | 2012 |
| Brightport Trading Ltd | Kington | 2025 |
| Brightprint Ltd | Preston | 2012 |
| Brightrose Limited | Birmingham | 1977 |
| Brights' Bespoke Joinery Ltd | Knighton | 2016 |
| Brightsea Limited | Exeter | 1991 |
| Brightside Bike Lights Limited | Hunsdon | 2015 |
| Brightside Blinds (UK) Limited | Paisley | 2019 |
| Brightside Brands Ltd | London | 2025 |
| Brightside Brewing Company Limited | Bury | 2009 |
| Brightside Carpentry Limited | Waltham Cross | 2017 |
| Brightside Print & Design Limited | London | 2006 |
| Brightsign Technology Limited | London | 2017 |
| Brightsparks 4KIDS Limited | Wrexham | 2014 |
| Brightstar Diamonds Limited | West Molesey | 2021 |
| Brightstar Lottery UK Solutions Limited | London | 1993 |
| Brightstar Shotblasting & Coatings Limited | Sheffield | 1998 |
| Brightstar Trading Co., Limited | London | 2023 |
| Brightstone Engineering Ltd | Edenbridge | 2025 |
| Brightsunshine Ltd | Surrey | 2017 |
| Brightview Windows and Conservatories Ltd | Rochdale | 2025 |
| Brightviewdoors Ltd | Rainham | 2025 |
| Brightwake Fabrications Limited | Notts | 2022 |
| Brightwake Limited | Kirkby In Ashfield | 1978 |
| Brightwater Brewery Limited | Epsom | 2012 |
| Brightwater Research | Cardiff | 2020 |
| Brightwaves Limited | London | 2025 |
| Brightwaves Nutritious Foods Ltd | London | 2024 |
| Brightwell Dosing Limited | Newhaven | 1960 |
| Brightwell International Health Technology Co., Ltd | Cambridge | 2025 |
| Brightwell Systems Limited | Worcester | 2007 |
| Brigida Botanica Limited | London | 2022 |
| Brik Confectionary Ltd | 50 Thomas More Street | 2019 |
| Brik-It Ltd | Nuneaton | 2025 |
| Brika Limited | Bexleyheath | 2021 |
| Brikwiz Ltd | Barking | 2023 |
| Brill Catering Ltd | Rugeley | 2024 |
| Brill Consulting Services Ltd | Aylesbury | 2026 |
| Brill Developments Ltd | Malton | 2018 |
| Brilla Ltd | York | 2021 |
| Brillante Investments Europeline Ltd | London | 2023 |
| Brillanz Limited | Peterborough | 2018 |
| Brillia Living Technology Co., Ltd | Cambridge | 2025 |
| Brilliant Box Limited | Goole | 2015 |
| Brilliant Co., Ltd | Beckenham | 2020 |
| Brilliant Dyes Ltd | London | 2025 |
| Brilliant Fabrications Limited | Milford Haven | 2014 |
| Brilliant Fires Ltd | Stockport | 2015 |
| Brilliant Luxury Co. Ltd | Poole | 2025 |
| Brilliant Minds Focus Jeweller Ltd | Essex | 2025 |
| Brilliant Punching Ltd | London | 2025 |
| Brilliant Start Corp Ltd | Gillingham | 2022 |
| Brilliant Technology Solutions Ltd | London | 2019 |
| Brilliant World Health Management Limited | Beckenham | 2025 |
| Brilliantmedia Limited | London | 2001 |
| Brilliantwave Ltd | Preston | 2024 |
| Brillianz International Ltd | Hatfield | 2012 |
| Brillienz (Holdings) Limited | Knowlhill | 2014 |
| Brillionics Ltd | London | 2024 |
| Brillopak Limited | Tonbridge | 2001 |
| Brilly Ltd | Edinburgh | 2023 |
| Brim Chargers Limited | Tunbridge Wells | 2020 |
| Brim Hydration Ltd | Reading | 2026 |
| Brima Export Ltd | Derby | 2016 |
| Brimac Hydraulics Ltd. | Glasgow | 1994 |
| Brimar Thermionic Products Limited | Stoke Prior | 2017 |
| Brimena Creatives Ltd | Croydon | 2025 |
| Brimflex Limited | Cambridge | 2009 |
| Brimful Brewing Ltd | Edinburgh | 2025 |
| Brimglades Limited | Rainham | 1971 |
| Brimkin Limited | Stockport | 2014 |
| Brimlake (Textiles) Ltd | London | 2018 |
| Brimmond Limited | Inverurie | 1996 |
| Brimmond Middle East Limited | Inverurie | 2025 |
| Brimonn (GB) Limited | Wolverhampton | 2007 |
| Brimor Engineering Limited | Blandford Forum | 1998 |
| Brimscombe Platers Limited | Stroud | 1998 |
| Brimstage Botanicals Ltd | Liverpool | 2026 |
| Brimstage Brewing Co. Ltd | Bromborough | 2004 |
| Brimtoy Limited | Whitstable | 2011 |
| Brin Engineering Limited | York | 1999 |
| Brinaco Limited | Pudsey | 1987 |
| Brindal Electrical & Security Solutions Ltd | Selby | 2012 |
| Brindale Limited | Ashington | 2004 |
| Brindle and Whyte Limited | Ramsgate | 2014 |
| Brindleclass Limited | London | 1980 |
| Brindley Built Ltd | Paisley | 2025 |
| Brindley Engineering Solutions Ltd | Bristol | 2017 |