| 00084968 Limited | Professional & scientific | 1905 |
| 1 and 3 Auckland Road KT1 3BG Freehold Ltd | Households | 2023 |
| 1 Cowper Road Worthing RTM Company Limited | Households | 2008 |
| 1 Falmer Developments Ltd | Real estate | 2024 |
| 1 Heene Road Limited | Professional & scientific | 2009 |
| 1 V 1 Limited | Wholesale & retail | 2009 |
| 1-4 Shirley Close "RTM" Company Limited | Extraterritorial | 2010 |
| 10 Park Crescent Management (Worthing) Limited | Professional & scientific | 2013 |
| 10 Walpole Terrace Limited | Households | 2007 |
| 100UK Ltd | Arts & recreation | 2017 |
| 103 Marine Parade Management Limited | Hospitality | 1998 |
| 105 Logistics Ltd | Other services | 2018 |
| 11 and 11A Evelyn Road RTM Company Limited | Households | 2025 |
| 11 Bedford Place Brighton Limited | Households | 1998 |
| 11 Powis Grove Management Company Limited | Households | 1998 |
| 11 Queens Road Limited | Real estate | 2007 |
| 11 Shelley Road Limited | Households | 1999 |
| 11 the Drive (Hove) Limited | Households | 2000 |
| 112 Marine Parade (Worthing) Limited | Households | 2009 |
| 113 Clifton Road Worthing Limited | Households | 2008 |
| 117 Brighton Road RTM Company Limited | Households | 2010 |
| 117 Lyndhurst Road (Freehold) Limited | Households | 2020 |
| 118 Aldwick Road RTM Company Limited | Real estate | 2023 |
| 118 Brondesbury Road Management LLP | | 2014 |
| 12 Buckingham Road Brighton Limited | Households | 1995 |
| 12 Byron Road RTM Company Limited | Real estate | 2015 |
| 12 Lordship Park Limited | Households | 1983 |
| 120 Portland Road (Worthing) Limited | Households | 2020 |
| 121365 Limited | Professional & scientific | 2021 |
| 123 Productions Limited | Information & communication | 2023 |
| 123 Touring Limited | Arts & recreation | 2023 |
| 124 Rowlands Road (Worthing) Limited | Households | 2003 |
| 125/127 Brighton Road Worthing Limited | Real estate | 2000 |
| 126 Duckett Street Freehold Limited | Real estate | 2011 |
| 13 Clifton Road LA Limited | Households | 2008 |
| 13 Heene Road Freehold Limited | Households | 2024 |
| 133 Tarring Road Management Company Limited | Households | 2016 |
| 136 Heene Road Worthing Limited | Real estate | 2013 |
| 14 Hova Villas Hove Limited | Households | 2011 |
| 14 Sackville Gardens (Freehold) Limited | Households | 2015 |
| 14 ST. Michael`S Place Brighton (Reversioners) Limited | Administrative & support | 2004 |
| 14-17 Shirley Close "RTM" Company Limited | Extraterritorial | 2010 |
| 15 Lansdowne Street (Hove) Limited | Households | 1998 |
| 15 Spital Square Residents Association Ltd | Professional & scientific | 1987 |
| 15 Tarring Road Limited | Households | 2023 |
| 15 West Buildings Worthing Limited | Education | 2001 |
| 150CLD Limited | Professional & scientific | 2017 |
| 158 Lyndhurst Road Limited | Households | 2013 |
| 16 Chatham Road Worthing Limited | Hospitality | 2001 |
| 160 Heene Road Residents Management Ltd | Households | 2025 |
| 165 Queens Park Road (Brighton) Limited | Extraterritorial | 2011 |
| 165TH Floor Ltd | Wholesale & retail | 2025 |
| 17 Farncombe Road (Worthing) Limited | Households | 2026 |
| 17 Selden Road Limited | Households | 2014 |
| 17/19 Lansdowne Place (Hove) Freeholders Limited | Households | 1995 |
| 1783 Limited | Financial services | 2021 |
| 18 Alexandra Road Worthing Management Company Limited | Households | 1987 |
| 18 Chesham Place Limited | Households | 2001 |
| 18 Kinsland RD Property Management Ltd | Hospitality | 2024 |
| 18 Westbourne Gardens Limited | Households | 1995 |
| 18-21 Shirley Close "RTM" Company Limited | Extraterritorial | 2010 |
| 1885 Maintenance Ltd | Construction | 2025 |
| 19 Church Walk Company Limited | Households | 2015 |
| 19 Reigate Road Management Co Ltd | Households | 2023 |
| 19 Sunnyhill Road Streatham (Freehold) Limited | Households | 2025 |
| 19 Winchester Road Management Company Limited | Households | 2019 |
| 19TH Hole Escapes Ltd | Administrative & support | 2026 |
| 1ST AD Chris Kelly Ltd | Information & communication | 2025 |
| 1ST Choice Entertainment Limited | Wholesale & retail | 2003 |
| 1ST Clear Flow Limited | Administrative & support | 2000 |
| 1ST Roofing Company Limited | | 1988 |
| 2 Cambridge Road (Worthing) Ltd | Households | 2024 |
| 2 Devonshire Place Brighton Limited | Households | 2019 |
| 2 Glengarry Road Limited | Households | 2001 |
| 2 Player Studios Ltd | Information & communication | 2017 |
| 2-4 Southey Road Limited | Households | 2020 |
| 20 Clifton Road Worthing (Management) Limited | Professional & scientific | 2012 |
| 20 Shakespeare Road Limited | Households | 2017 |
| 2020X Limited | Information & communication | 2013 |
| 21 Holland Road, Hove Limited | Households | 1993 |
| 21 Littlehampton Road RTM Company Limited | Real estate | 2007 |
| 21 Shelley Road (Worthing) Limited | Households | 2021 |
| 21 York Road RTM Company Limited | Real estate | 2025 |
| 2123 Furzdown Management Company Ltd | Extraterritorial | 2018 |
| 213 BR RD (Worthing) RTM Company Limited | Households | 2020 |
| 21RECORDS Limited | Information & communication | 2023 |
| 21SOUNDS Limited | Information & communication | 2023 |
| 22 Champion Crescent Limited | Households | 2018 |
| 22 Media Limited | Information & communication | 2000 |
| 22 Prorecovery Ltd | Manufacturing | 2026 |
| 22-25 Shirley Close "RTM" Company Limited | Extraterritorial | 2010 |
| 222 Strategic Consultancy Ltd | Other services | 2019 |
| 225 Developments Limited | Construction | 2021 |
| 23 to 29 Southview Gardens Limited | Households | 2020 |
| 23 Waterloo Street Limited | Households | 2002 |
| 23/24 Brunswick Square Limited | Households | 2001 |
| 23/24 Hanover Crescent Brighton Limited | Households | 2003 |
| 23RD MAN Ltd | Arts & recreation | 2003 |
| 24 Cambridge Road (Hove) Limited | Households | 2003 |
| 24X Limited | Information & communication | 2000 |