| Brighton BED Centre Limited | Manufacturing | 2002 |
| Brighton Botanical Limited | Professional & scientific | 2002 |
| Brighton Business Group Ltd | Real estate | 2023 |
| Brighton International Summer School Limited | Education | 2002 |
| Brighton Marina Company Limited(The) | Real estate | 1983 |
| Brighton Marina Residential Management Company Limited | Real estate | 1987 |
| Brighton Marina Village Estate Company Partnership LLP | | 2007 |
| Brighton Motor Works Limited | Wholesale & retail | 2003 |
| Brighton Muslim Centre Ltd | Health & social care | 2021 |
| Brighton Publishing Company Limited | Manufacturing | 1990 |
| Brighton Registrars Limited | Administrative & support | 1990 |
| Brighton Seafront Heritage Trust Limited | Arts & recreation | 1998 |
| Brighton Soft Drinks Limited | Wholesale & retail | 2005 |
| Brightstone Consulting Limited | Professional & scientific | 2007 |
| Brinds Limited | Professional & scientific | 2007 |
| Brinkdove Caterers Limited | Hospitality | 1990 |
| Britannia Care Homes (Sussex) Limited | Real estate | 1995 |
| Britannia Holdings (UK) Limited | Professional & scientific | 2005 |
| Britannia World Travel PLC | Administrative & support | 1992 |
| Britcher & Rivers Ltd | Hospitality | 1998 |
| Britech Systems Limited | Information & communication | 1995 |
| Brittany Court (Bexhill) Limited | Households | 1962 |
| Broadspectrum Technical Services Limited | Information & communication | 2006 |
| Brook House Farms Limited | Agriculture & fishing | 2006 |
| Brookmarsh Furniture Limited | Water & waste | 1996 |
| Brookside Properties Limited | Construction | 1997 |
| Bryant Decorators Limited | Construction | 1997 |
| Bryong Limited | Real estate | 1981 |
| Bubbles Sussex Services Limited | Other services | 2014 |
| Buckhurst Court Limited | Households | 1956 |
| Buckle Holiday Parks Limited | Hospitality | 2008 |
| Buddies (Brighton) Limited | Professional & scientific | 2001 |
| Bungard & Sons Limited | Other services | 1940 |
| Burokas Ltd | Real estate | 2024 |
| Business Assist (UK) Limited | Administrative & support | 2002 |
| Business Cleaning Services (Sussex) Limited | Administrative & support | 2002 |
| Business Com-Tec Limited | | 1988 |
| Business Cost Consultancy Ltd | Administrative & support | 2006 |
| Buy 2 WIN Co. Limited | Wholesale & retail | 1998 |
| BWA Properties Ltd. | Construction | 1994 |
| Byrstone Limited | Real estate | 2003 |
| C & a Wicks Limited | Construction | 2005 |
| C & C Computer Services Ltd. | Information & communication | 1998 |
| C C Limited | Information & communication | 2005 |
| C Change (Southern) Ltd | Professional & scientific | 2004 |
| C D P Services Limited | Wholesale & retail | 1967 |
| C L H Van DER Meer (Farm) Ltd | Agriculture & fishing | 2006 |
| C S Concrete Limited | Construction | 1993 |
| C.P.S. Partnership Limited | Wholesale & retail | 1994 |
| C.R.W. Residents' Association Limited | Households | 1999 |
| Cabcomit Ltd | Information & communication | 2004 |
| Cable Graphics Limited | Arts & recreation | 1989 |
| Cafe East Dean Ltd | Hospitality | 2024 |
| Caffyn Family Holdings Limited | Professional & scientific | 1961 |
| Caffyns Pension Fund Trustees Limited | Financial services | 1947 |
| Caffyns Properties Limited | Extraterritorial | 1997 |
| Campbell Joinery Limited | Construction | 2009 |
| Canimar Ltd | Hospitality | 2005 |
| Cannell Graphics Limited | Administrative & support | 2003 |
| Carcraft MOT & Service Centre Limited | Wholesale & retail | 2007 |
| Careprint UK Limited | Health & social care | 2024 |
| Carleton-Lightfoot Services Limited | Financial services | 1991 |
| Carley Construction Limited | Construction | 2002 |
| Carley Developments Limited | Construction | 2014 |
| Carmiles Limited | Transport & logistics | 2000 |
| Carousel Entertainment of Windsor Limited | Arts & recreation | 1996 |
| Carpet & Fabric Care Limited | Administrative & support | 2003 |
| Carter Physiotherapy Limited | Other services | 2005 |
| Casa Rosa Limited | Real estate | 1998 |
| Cascade Media Ltd | Information & communication | 2021 |
| Castear Residents Association Limited | Households | 1992 |
| Castle Estates (South Coast and Weald) Limited | Other services | 2003 |
| Castlebrere Limited | Households | 1993 |
| Castleham MOT Test Centre Ltd | Wholesale & retail | 2000 |
| Castleland Developments Limited | Construction | 2005 |
| Caterham Welders Limited | Construction | 2002 |
| Catering Systems Limited | Administrative & support | 2002 |
| Catman Furs Limited | | 1969 |
| Cavendish Bakery Limited | Manufacturing | 2002 |
| CCL2 Ltd | Households | 2021 |
| CCM Interior Services Limited | Construction | 2002 |
| Ccmed Limited | Wholesale & retail | 2000 |
| Centem Limited | Construction | 2006 |
| Centenary Estate (Brighton) Limited | Households | 1984 |
| Ceres Bakery Limited | Professional & scientific | 2002 |
| Cgtech Limited | Information & communication | 1998 |
| Chalkrock Limited | Professional & scientific | 2006 |
| Chalvington Nominees Limited | Professional & scientific | 2005 |
| Chamberlain Properties Limited | Real estate | 2004 |
| Channel 2000 Limited | Real estate | 1996 |
| Chapman Design Limited | Professional & scientific | 2003 |
| Charles Lamb Professional Services Limited | Professional & scientific | 2003 |
| Charles Piton Limited | Administrative & support | 2003 |
| Charlesworth Rest Home Ltd | Other services | 2006 |
| Chateau DE Kayona Limited | | 2004 |
| Chaucer Property Enterprises Limited | Real estate | 2006 |
| Chayla Construction Ltd | Construction | 2025 |
| Chealwatch Limited | Other services | 2002 |
| Cheramoor Limited | Real estate | 2001 |
| Cherry View Limited | | 1990 |