| Brighton Housekeeping Limited | Households | 2012 |
| Brighton Hygienist Ltd | Health & social care | 2022 |
| Brighton Ice Cream Company Limited | Wholesale & retail | 2026 |
| Brighton Ice Limited | Wholesale & retail | 2025 |
| Brighton Illustration Fair Ltd | Administrative & support | 2025 |
| Brighton Independent Press Ltd | Information & communication | 2024 |
| Brighton Inn Ltd | Hospitality | 2024 |
| Brighton Internet Limited | Wholesale & retail | 2006 |
| Brighton Investment Group Limited | Real estate | 2020 |
| Brighton Islamic Centre Ltd | Other services | 2016 |
| Brighton IT Limited | Information & communication | 2006 |
| Brighton Jazz Club | Arts & recreation | 1985 |
| Brighton Kebab House Limited | Hospitality | 2025 |
| Brighton Kiosk Company Ltd | Hospitality | 2019 |
| Brighton Kitesurf and SUP Academy Ltd | Arts & recreation | 2011 |
| Brighton Knee & Shoulder Service Limited | Health & social care | 2009 |
| Brighton Kutchenhaus Limited | Wholesale & retail | 2022 |
| Brighton Legal Ltd | Professional & scientific | 2017 |
| Brighton Lettings Agency Limited | Real estate | 2018 |
| Brighton Library of Things CIC | Health & social care | 2022 |
| Brighton Life Ltd | Financial services | 2025 |
| Brighton Lifts Limited | Manufacturing | 2021 |
| Brighton Little Fish and Chip Shop Ltd | Hospitality | 2020 |
| Brighton Littletheatre Company Limited | Arts & recreation | 1986 |
| Brighton Lofts Limited | Manufacturing | 2025 |
| Brighton Lure Boat Ltd | Arts & recreation | 2020 |
| Brighton M.O.T. Centre Limited | Wholesale & retail | 2003 |
| Brighton Maintenance Team Ltd | Construction | 2019 |
| Brighton Make UP School Ltd | Education | 2014 |
| Brighton Marina Group Limited | Real estate | 2018 |
| Brighton Marina Yacht Club Limited | Arts & recreation | 1981 |
| Brighton Marine Palace & Pier Company (the) | Arts & recreation | 1981 |
| Brighton Massage Collective Ltd | Manufacturing | 2025 |
| Brighton Mermaid Limited | Professional & scientific | 2024 |
| Brighton Mini Market BN2 Ltd | Wholesale & retail | 2023 |
| Brighton Minimarket Ltd | Wholesale & retail | 2022 |
| Brighton Mosque and Muslim Community Centre | Other services | 2007 |
| Brighton Mouldings Limited | Construction | 1993 |
| Brighton Music School Ltd | Education | 2024 |
| Brighton Natural Health Foundation Ltd | Education | 1984 |
| Brighton North and Central Primary Care Network Limited | Health & social care | 2022 |
| Brighton Open Market CIC | Real estate | 2011 |
| Brighton Orthopaedic and Sports Injury Clinic Limited | Health & social care | 2007 |
| Brighton Ourstory | Education | 2003 |
| Brighton Outdoor Fitness Ltd | Arts & recreation | 2018 |
| Brighton Painters Limited | Other services | 2012 |
| Brighton Palace Pier (Assets) Limited | Arts & recreation | 2016 |
| Brighton Palace Pier (Holdings) Limited | Arts & recreation | 2016 |
| Brighton Party Wall Consultants Limited | Construction | 2024 |
| Brighton Peace and Environment Centre | Education | 2007 |
| Brighton Permaculture Trust | Education | 2000 |
| Brighton Photographers Gallery Ltd | Wholesale & retail | 2014 |
| Brighton Photography Gallery Ltd | Arts & recreation | 2017 |
| Brighton Photography Limited | Arts & recreation | 2009 |
| Brighton Physiotherapy Clinic Limited | Health & social care | 2023 |
| Brighton Physiotherapy Ltd | Extraterritorial | 2014 |
| Brighton PIP Ltd | Health & social care | 2016 |
| Brighton Pizza and Chicken Limited | Hospitality | 2020 |
| Brighton Planning Limited | Professional & scientific | 2018 |
| Brighton Plumbing Solutions Ltd | Construction | 2020 |
| Brighton Prime Cleaning Ltd | Administrative & support | 2026 |
| Brighton Properties Limited | Extraterritorial | 2014 |
| Brighton Property Assets Limited | Real estate | 2018 |
| Brighton Property Hunter Limited | Real estate | 2014 |
| Brighton Property Ltd | Real estate | 2018 |
| Brighton Razzledazzle Ltd | Wholesale & retail | 2024 |
| Brighton Rebar Ltd | Construction | 2021 |
| Brighton Repair Café C.I.C. | Other services | 2019 |
| Brighton RES Maintenance Ltd | Real estate | 2022 |
| Brighton Rock Management Ltd | Hospitality | 2017 |
| Brighton Rockers Roller Derby | Arts & recreation | 2014 |
| Brighton Rocks Design Ltd | Professional & scientific | 2023 |
| Brighton Rocks Films Ltd | Information & communication | 2020 |
| Brighton Rocks Public House Ltd | Other services | 2016 |
| Brighton Rocks! Cufflinks Ltd | Manufacturing | 2023 |
| Brighton Rope CIC | Arts & recreation | 2024 |
| Brighton Rubbish Solutions Limited | Water & waste | 2017 |
| Brighton Sash Windows Limited | Construction | 2022 |
| Brighton Sausage Co Ltd | Manufacturing | 2018 |
| Brighton School of Business and Management Limited | Education | 2006 |
| Brighton School of Massage Limited | Other services | 2017 |
| Brighton School of Singing CIC | Education | 2011 |
| Brighton Science Festival Limited | Education | 1978 |
| Brighton Scientific Ltd | Information & communication | 2019 |
| Brighton Sea Gym Limited | Arts & recreation | 2022 |
| Brighton Shore Limited | Real estate | 2024 |
| Brighton Sign Company Ltd | Professional & scientific | 1984 |
| Brighton Silver Ltd | Wholesale & retail | 2016 |
| Brighton Site Management Limited | Households | 2014 |
| Brighton Sound System Limited | Administrative & support | 2016 |
| Brighton Spirits Company Ltd | Manufacturing | 2013 |
| Brighton Sports Therapy Ltd | Health & social care | 2025 |
| Brighton Starling Ltd | Real estate | 2019 |
| Brighton Streamline Taxi-Cab Limited | Transport & logistics | 1971 |
| Brighton Sunblinds Ltd | Manufacturing | 2008 |
| Brighton Sussex Property Ltd | Real estate | 2018 |
| Brighton Swimming Centre Limited | Arts & recreation | 2010 |
| Brighton Tailor Ltd | Wholesale & retail | 2023 |
| Brighton Taxi 4 U Ltd | Transport & logistics | 2018 |
| Brighton Telecoms Ltd | Information & communication | 2010 |