| 12 ST Andrews Road Portslade Limited | Households | 2008 |
| 12 ST Georges Terrace RTM Company Limited | Households | 2011 |
| 121 Ditchling Rise (Brighton) Management Company Limited | Households | 2014 |
| 123 Marine Parade Limited | Households | 2002 |
| 12374098 Ltd | Hospitality | 2019 |
| 123ICU Ltd. | Wholesale & retail | 2011 |
| 126 Ebury Street RTM Company Limited | Real estate | 2008 |
| 126 Marine Parade (Brighton) Limited | Households | 2000 |
| 126 Z Barber Ltd | Other services | 2026 |
| 1273 Software Ltd | Information & communication | 2026 |
| 128 Marine Parade Brighton Co. Ltd. | Households | 2001 |
| 12A Crescent Place Brighton Limited | Households | 2009 |
| 12A Egremont Place Limited | Real estate | 2010 |
| 12TH Origin Limited | Real estate | 2025 |
| 13 and 13A Cowper Street Management Company Limited | Households | 2015 |
| 13 Artists Limited | Arts & recreation | 2010 |
| 13 Artists Trustee Limited | Extraterritorial | 2025 |
| 13 Beaconsfield Villas (Brighton) Limited | Households | 2015 |
| 13 Bedford Square Limited | Real estate | 2016 |
| 13 Buckingham Road Management Limited | Real estate | 2004 |
| 13 Clarendon Villas (Freehold) Limited | Real estate | 2016 |
| 13 Davigdor Road Freehold Limited | Real estate | 2020 |
| 13 Grand Parade (Brighton) Limited | Households | 1998 |
| 13 London Limited | Hospitality | 2022 |
| 13 Marine Square (Brighton) Limited | Professional & scientific | 1992 |
| 13 Montpelier Street (Brighton) Limited | Households | 2011 |
| 13 Roundhill Crescent Limited | Households | 2005 |
| 13 ST. Aubyns RTM Company Limited | Administrative & support | 2009 |
| 13 the Cliff Limited | Households | 2025 |
| 13 Wordsworth Street (Hove) Freehold Limited | Households | 2018 |
| 13-15 Ryde Road (Brighton) Limited | Real estate | 2005 |
| 13-17 Baron Street Ltd | Real estate | 2025 |
| 130 Dyke Road Limited | Households | 1995 |
| 130701 Limited | Manufacturing | 2001 |
| 131 Ditchling Road RTM Company Limited | Households | 2015 |
| 132 Springfield Road RTM Company Limited | Households | 2021 |
| 136 Bravington Road W9 Freehold Limited | Households | 2025 |
| 137 Ditchling Rise Brighton Limited | Real estate | 1996 |
| 138 Hollingdean Terrace RTM Company Limited | Administrative & support | 2010 |
| 14 Bedford Place RTM Company Ltd | Households | 2025 |
| 14 Chesham Place (Brighton) Ltd | Hospitality | 2012 |
| 14 Devonshire Place Limited | Households | 2005 |
| 14 Gladstone Place Limited | Households | 2026 |
| 14 Guildford Road Brighton Limited | Real estate | 2008 |
| 14 Hampstead Lane Management Company Limited | Households | 2007 |
| 14 Lewes Crescent Freehold Limited | Households | 2023 |
| 14 Powis Square Limited | Real estate | 2001 |
| 14 Walpole Terrace RTE Company Limited | Households | 2008 |
| 14, Clifton Terrace Residents Association Limited | Households | 1976 |
| 14-15 Mill Close BN45 (Freehold) Limited | Real estate | 2016 |
| 140 Marine Parade (Brighton) Limited | Extraterritorial | 2000 |
| 140 Springfield Road Brighton Limited | Professional & scientific | 1997 |
| 142-144 Eastern Road Brighton Limited | Households | 2005 |
| 144 Queens Park Road Freehold Company Limited | Households | 2025 |
| 144 Westbourne Street Limited | Households | 2018 |
| 144-146 Dyke Road Brighton Limited | Real estate | 2010 |
| 144-150 Florence Road Freehold Limited | Real estate | 2013 |
| 146 Upper Lewes RD Flats RTM Company Limited | Households | 2018 |
| 149 Cleveland Street Limited | Real estate | 2025 |
| 149 Ditchling Rise Limited | Households | 2008 |
| 15 Beaconsfield Villas Limited | Real estate | 2001 |
| 15 Clermont Terrace (Brighton) Freeholders Limited | Households | 2019 |
| 15 Cresswell Gardens Limited | Households | 1994 |
| 15 Dover Road Brighton Ltd | Real estate | 2011 |
| 15 Grand Avenue Hove Limited | Households | 1990 |
| 15 Hartington Road (Brighton) Freehold Limited | Households | 2025 |
| 15 Kings Gardens Hove Limited | Households | 1994 |
| 15 Louvaine Road Limited | Professional & scientific | 2005 |
| 15 Millers Road Brighton Limited | Households | 2025 |
| 15 Montpelier Road Limited | Real estate | 2012 |
| 15 Montpelier Street (Brighton) Limited | Real estate | 2004 |
| 15 Shelldale Road Limited | Households | 2003 |
| 15 Totland Road RTM Company Limited | Real estate | 2009 |
| 15 Waterloo Street Management Limited | Households | 2006 |
| 15, 16 and 17 Portland Place Kemptown Management Company Limited | Households | 1979 |
| 15-16 Atlingworth Street (Brighton) Limited | Households | 2007 |
| 150 Ditchling Road Management Ltd | Real estate | 2003 |
| 150 Springfield Road RTM Company Ltd | Extraterritorial | 2014 |
| 151 Goldsmiths ROW RTM Company Ltd | Real estate | 2010 |
| 153 Upper Lewes Road Limited | Households | 1994 |
| 154 Eastern Road Limited | Other services | 2018 |
| 155 Preston Drove Limited | Households | 2017 |
| 157 Marine Parade Brighton Limited | Households | 1996 |
| 159 Ditchling Road Right to Manage Company Limited | Real estate | 2007 |
| 15BELOW Holdings Limited | Financial services | 2018 |
| 16 Albert Road (Brighton) Ltd | Households | 2013 |
| 16 Brunswick Terrace (Hove) Limited | Households | 1985 |
| 16 Caddington Road (London) Limited | Households | 2021 |
| 16 Chesham Place (Brighton) Limited | Households | 2003 |
| 16 Clermont Terrace Brighton Residents Ltd | Households | 2023 |
| 16 Collingbourne Road Freehold Management Company Limited | Administrative & support | 2017 |
| 16 Compton Road RTM Company Limited | Households | 2018 |
| 16 Grand Parade Brighton Limited | Households | 1998 |
| 16 Lewes Crescent Limited | Households | 1998 |
| 16 Palmeira Square Limited | Households | 1996 |
| 16 Paston Place (Brighton) Limited | Households | 2021 |
| 16 ST George's Terrace Brighton Ltd | Households | 2015 |
| 16 Sussex Square Brighton Limited | Households | 2000 |
| 16 Ventnor Villas Hove Limited | Real estate | 1999 |
| 16 Vernon Terrace Limited | Households | 2024 |