| Briaco Limited | Real estate | 2025 |
| Brian Follwell Associates Limited | Professional & scientific | 2001 |
| Brian Marshall & Sons Holdings Limited | Financial services | 2023 |
| Brian Russell & Co Limited | Wholesale & retail | 2007 |
| Brices Limited | Real estate | 2004 |
| Brick Butler Limited | Wholesale & retail | 2015 |
| Brickbridge Operations Ltd | Information & communication | 2024 |
| Brickett Davda Limited | Manufacturing | 2012 |
| Bricolage Productions Ltd | Information & communication | 2021 |
| Bride and the Party Ltd | Wholesale & retail | 2025 |
| Bridge Connecting Limited | Wholesale & retail | 2025 |
| Bridge House Theatre Productions Ltd | Administrative & support | 2025 |
| Bridge Lending Limited | Financial services | 2021 |
| Bridge North Consulting Ltd | Real estate | 2023 |
| BRIDGE50 Ltd | Other services | 2022 |
| Bridgecourt EDS Limited | Extraterritorial | 2018 |
| Bridgenor Group Ltd | Administrative & support | 2015 |
| Bridget Baker Consulting Ltd | Professional & scientific | 2006 |
| Bridging Change CIC | Information & communication | 2021 |
| Bridonn Ltd | Construction | 2012 |
| Brierley Property Company Ltd | Construction | 2023 |
| Bright Acres Ltd | Real estate | 2020 |
| Bright Artificial Intelligence Limited | Information & communication | 2004 |
| Bright Bay PUB Co Limited | Hospitality | 2025 |
| Bright City Collective Ltd | Information & communication | 2015 |
| Bright Cleaning Ltd | Administrative & support | 2024 |
| Bright Convenience Ltd | Wholesale & retail | 2024 |
| Bright Culture Consultancy LLP | | 2016 |
| Bright Design Services Limited | Professional & scientific | 2018 |
| Bright Green Homes LLP | | 2009 |
| Bright Green Penguin C.I.C. | Health & social care | 2019 |
| Bright Guides Ltd | Information & communication | 2025 |
| Bright Interactive Limited | Information & communication | 1999 |
| Bright KRU Media Ltd | Professional & scientific | 2023 |
| Bright LAB Electronics Ltd | Manufacturing | 2019 |
| Bright Lantern Practice LLP | | 2026 |
| Bright Lets Sussex Ltd | Real estate | 2021 |
| Bright Little Light Ltd | Professional & scientific | 2009 |
| Bright Monkey Marketing Limited | Administrative & support | 2009 |
| Bright N Clean Yacht Maintenance Ltd | Manufacturing | 2021 |
| Bright Onion Pedals Limited | Manufacturing | 2018 |
| Bright Spark Productions Limited | Information & communication | 1997 |
| Bright Students Cars Ltd | Transport & logistics | 2025 |
| Bright Time Limited | Wholesale & retail | 2010 |
| Bright Town Properties Ltd | Real estate | 2019 |
| Bright Young Engineers Ltd | Education | 2020 |
| Brightbyte Limited | Information & communication | 2011 |
| Brightcustom Property Management Limited | Other services | 1992 |
| Brightelmstead Ltd | Education | 2013 |
| Brighten Aesthetics Ltd | Other services | 2016 |
| Brighten UP Your Home Limited | Households | 2008 |
| Brighter Dayz International Limited | Information & communication | 2019 |
| Brightfire Productions Ltd | Wholesale & retail | 2008 |
| Brightguide Africa Ltd | Professional & scientific | 2020 |
| Brighthelm Church and Community Centre Trust Limited | Real estate | 2010 |
| Brighthelm Solutions Ltd | Information & communication | 2023 |
| Brightlens Ltd | Information & communication | 2025 |
| Brightlocal Ltd | Administrative & support | 2016 |
| Brightlocal Services Ltd | Financial services | 2016 |
| Brighton & Hove Airport Services Ltd | Transport & logistics | 2025 |
| Brighton & Hove Albion Foundation Ltd | Education | 2004 |
| Brighton & Hove Albion Foundation Trading Company Ltd | Other services | 2022 |
| Brighton & Hove Albion Holdings Limited | Professional & scientific | 1993 |
| Brighton & Hove Albion Women's Football Club Limited | Arts & recreation | 2016 |
| Brighton & Hove City Cabs Limited | Extraterritorial | 2000 |
| Brighton & Hove City Taxis Limited | Transport & logistics | 2000 |
| Brighton & Hove Community Works | Other services | 1999 |
| Brighton & Hove Digital Radio CIC | Information & communication | 2023 |
| Brighton & Hove Food Partnership | Other services | 2005 |
| Brighton & Hove Montessori Ltd | Education | 2003 |
| Brighton & Hove Philharmonic Society Limited | Arts & recreation | 1941 |
| Brighton & Hove Plastics Limited | Manufacturing | 2010 |
| Brighton & Hove Radio Limited | Information & communication | 2003 |
| Brighton & Hove Residential Limited | Real estate | 2014 |
| Brighton & Hove Speak OUT | Health & social care | 1999 |
| Brighton & Hove Streamline Taxis Limited | Transport & logistics | 2007 |
| Brighton & Hove Unemployed Workers Centre Limited | Health & social care | 2001 |
| Brighton & Hove Wood Recycling Project | Water & waste | 1998 |
| Brighton & Newhaven Fish Sales Limited | Wholesale & retail | 2009 |
| Brighton + Hove Property Company Limited | Real estate | 2004 |
| Brighton 7'S Festival Ltd | Administrative & support | 2025 |
| Brighton Academy Limited | Arts & recreation | 2012 |
| Brighton Accommodation & Property Services Limited | Real estate | 2012 |
| Brighton Accountancy Services Ltd | Professional & scientific | 2010 |
| Brighton Active Lifestyle Ltd | Arts & recreation | 2017 |
| Brighton Administration Company (NO.2) Limited | Real estate | 1999 |
| Brighton Administration Company Limited | Real estate | 1998 |
| Brighton Adventures Ltd | Education | 2017 |
| Brighton AID | Health & social care | 2015 |
| Brighton Air Limited | Real estate | 2023 |
| Brighton Airport Skylink Ltd | Transport & logistics | 2023 |
| Brighton Airport Taxis South East Ltd | Transport & logistics | 2023 |
| Brighton Airport Transfer Ltd | Transport & logistics | 2020 |
| Brighton and Hove Albion Football Club,Limited(The) | Arts & recreation | 1904 |
| Brighton and Hove Bathrooms Ltd | Construction | 2024 |
| Brighton and Hove Business Forum Limited | Administrative & support | 1999 |
| Brighton and Hove Carpentry Ltd | Manufacturing | 2025 |
| Brighton and Hove City Mission | Other services | 2005 |
| Brighton and Hove City Streamline Ltd. | Transport & logistics | 1996 |
| Brighton and Hove Clearance Ltd | Water & waste | 2020 |