| 35 Brunswick Place Limited | Households | 2020 |
| 35 Campbell Road Brighton Limited | Households | 2009 |
| 35 Eaton Place RTM Company Limited | Households | 2009 |
| 35 Perrymount Road Limited | Real estate | 2023 |
| 35 Preston Park Avenue (Freehold) Limited | Real estate | 2007 |
| 35 Sillwood Road Freeholders Limited | Real estate | 2020 |
| 35 ST Michaels Place Brighton Limited | Households | 2007 |
| 35 Temple Street (Brighton) Management Limited | Households | 2006 |
| 35 Tressillian Road (London) Limited | Households | 2007 |
| 36 Dunsmure Road RTM Company Limited | Households | 2019 |
| 36 Gardener Street Limited | Households | 2025 |
| 36 Old Shoreham Road (Brighton) Ltd | Households | 2009 |
| 36 Queens Park Road Brighton Limited | Extraterritorial | 2005 |
| 36 West Hill Residents Limited | Real estate | 2006 |
| 36 Western Street Limited | Households | 2006 |
| 36-38 Arundel Road Limited | Extraterritorial | 2012 |
| 36-38 Arundel Road RTM Company Limited | Households | 2016 |
| 360 Communications Limited | Administrative & support | 2000 |
| 360 Dyslexia Ltd | Education | 2021 |
| 360 Pro AI Limited | Information & communication | 2024 |
| 360MINDBODYSOUL Limited | Education | 2022 |
| 36HOVAVILLAS Limited | Households | 2015 |
| 37 Brunswick Square Ltd | Construction | 2018 |
| 37 Chichester Place Limited | Professional & scientific | 2000 |
| 37 Dyke Road Drive Limited | Professional & scientific | 2013 |
| 37 Edward Street Limited | Households | 2022 |
| 37 Holland Road Hove Freehold Company Limited | Households | 2015 |
| 37 Montpelier Crescent Management Company Limited | Households | 2003 |
| 37 Roundhill Crescent (BTN) Limited | Households | 1995 |
| 37 Upper Rock Gardens (Brighton) Management Limited | Households | 2001 |
| 37 Wellington Road Brighton Limited | Households | 2002 |
| 37-38 Bedford Square RTM Company Limited | Extraterritorial | 2025 |
| 38 - 39 Devonshire Place Brighton Limited | Households | 2009 |
| 38 Clarendon Villas (Hove) Limited | Households | 2001 |
| 38 Comerford Management Company Limited | Households | 2022 |
| 38 Goldstone Villas (Hove) Freehold Company Limited | Households | 2020 |
| 38 Stanford Road (Freehold) Limited | Households | 2025 |
| 38 Tite Street Limited | Households | 2021 |
| 388-SURRY Arms Limited | Households | 2026 |
| 39 & 39A Franklin Road RTM Company Limited | Households | 2021 |
| 39 & 39A Shanklin Road Brighton Limited | Households | 2014 |
| 39 Buckingham Place Limited | Households | 2008 |
| 39 Eaton Place Brighton Management Limited | Households | 1997 |
| 39 Fourth Avenue (Hove) Limited | Households | 2020 |
| 39 Hollingbury Park Avenue Limited | Hospitality | 2009 |
| 39 Russell Square Brighton Limited | Households | 2015 |
| 39 Russell Square RTM Company Ltd | Households | 2026 |
| 3A Capital I Carry LLP | | 2025 |
| 3A Capital I GP LLP | | 2026 |
| 3A Capital Limited | Professional & scientific | 2026 |
| 3AB Property Limited | Real estate | 2026 |
| 3BB-BRIGHTON Ltd | Administrative & support | 2023 |
| 3C IT Consultancy Limited | Information & communication | 2022 |
| 3D Printed AWE Ltd | Manufacturing | 2024 |
| 3DEGREE Dining Ltd | Hospitality | 2018 |
| 3DEGREE Peacehaven Limited | Hospitality | 2018 |
| 3DIFY Ltd | Professional & scientific | 2013 |
| 3RD EYE Vision Limited | Information & communication | 1998 |
| 3THRED Ltd | Wholesale & retail | 2025 |
| 3VEREST Limited | Information & communication | 2017 |
| 3XI Group Ltd | Real estate | 2024 |
| 3XI Investments Limited | Real estate | 2015 |
| 3XI Ltd | Real estate | 2011 |
| 4 Albert Road Limited | Extraterritorial | 2006 |
| 4 Alexandra Villas Brighton Limited | Households | 2005 |
| 4 Arundel Terrace Limited | Households | 2005 |
| 4 Atlingworth Street RTM Company Limited | Households | 2020 |
| 4 Bath Street (Brighton) Limited | Households | 2011 |
| 4 Belgrave Place Brighton Limited | Households | 2005 |
| 4 Clarence Square (Brighton) Ltd | Households | 2019 |
| 4 Clarendon Place (Brighton) Limited | Households | 2015 |
| 4 College Road Limited | Real estate | 2022 |
| 4 Cornwall Gardens Limited | Households | 2015 |
| 4 Living Furniture Limited | Wholesale & retail | 2004 |
| 4 Norfolk Terrace (Freehold) Limited | Real estate | 2005 |
| 4 Oriental Place (Brighton) Ltd | Extraterritorial | 1996 |
| 4 ST Aubyns (Hove) Freeholders Limited | Households | 1998 |
| 4 ST Michael's Place (Brighton) Ltd | Households | 2022 |
| 4 Waterloo Street (Hove) Freehold Limited | Households | 2012 |
| 40 Buckingham Place (Brighton) Limited | Households | 2014 |
| 40 Clermont Terrace Brighton (Management) Limited | Households | 1995 |
| 40 Kensington Place (Brighton) Limited | Households | 2023 |
| 40 Marine Parade (Brighton) Limited | Real estate | 2005 |
| 40 Plus Fit Ltd. | Other services | 2017 |
| 40 Plus NOT Giving UP Limited | Wholesale & retail | 2019 |
| 40 Preston Park Avenue (Freeholders) Limited | Households | 2001 |
| 40 Sackville Road Hove Limited | Households | 2010 |
| 40 South Road (Newhaven) Limited | Real estate | 2005 |
| 40 Stanford Avenue Ltd | Households | 2004 |
| 40 Tivoli Crescent Limited | Households | 1999 |
| 41 Auckland Hill (Freehold) Limited | Households | 2023 |
| 41 Langney Road RTM Limited | Households | 2017 |
| 41 Queens Park Road Brighton Limited | Households | 2002 |
| 41 Upper Rock Gardens Limited | Households | 1991 |
| 41/42 Brunswick Terrace (Hove) Limited | Households | 2016 |
| 417 Properties Ltd | Real estate | 2022 |
| 42 Buckingham Road Company Limited | Households | 2007 |
| 42 Dyke Road Brighton (Management) Limited | Households | 2001 |
| 42 Dyke Road Drive Limited | Professional & scientific | 2015 |
| 42 Group Holding Limited | Professional & scientific | 2023 |