| 1-5 Duncan Road RTM Company Limited | Households | 2020 |
| 10 Eastern Villas Road RTM Company Ltd | Households | 2018 |
| 10 Elphinstone Road Limited | Households | 2017 |
| 10 Lawn Road Residents Association Limited | Hospitality | 2003 |
| 10 Nightingale Road Southsea RTM Company Limited | Professional & scientific | 2009 |
| 1018 Developments Limited | Real estate | 2002 |
| 104 Limited | Hospitality | 2016 |
| 105 ST Andrews Road Management Company Limited | Households | 2011 |
| 106 Fawcett Road Ltd | Real estate | 2025 |
| 11-12 Market Strand RTM Company Limited | Households | 2025 |
| 116 Lawrence Road Southsea (Management) Limited | Households | 2012 |
| 119/121 New Road Portsmouth Ltd | Households | 2000 |
| 12 Nightingale Road (Southsea) Limited | Households | 2021 |
| 123 Global Education Limited | Education | 2024 |
| 13 Hereford Road Limited | Households | 2012 |
| 131 Albert Road Portsmouth Ltd | Wholesale & retail | 2024 |
| 138-140 Eastney RD Management Company Ltd | Real estate | 2019 |
| 14 Kent Road Limited | Households | 1999 |
| 14 Victoria Road North Ltd | Households | 2020 |
| 143 Highland Ltd | Households | 2021 |
| 145-147 Fawcett Road Management Company Limited | Households | 2004 |
| 148 ELM Grove Management Company Limited | Households | 2005 |
| 14HOMES Limited | Health & social care | 2022 |
| 15 Waverley Grove Management Co Ltd | Households | 2005 |
| 16 Ashburton Road Limited | Households | 2005 |
| 165 ELM Grove Leasing Limited | Real estate | 2022 |
| 17 Salisbury Road Southsea Limited | Extraterritorial | 2006 |
| 170 Fawcett Ltd | Real estate | 2022 |
| 18 Portland Place (Brighton) Management Limited | Households | 2003 |
| 1803 Films Limited | Information & communication | 2016 |
| 1ST Southsea Mini Market Ltd | Wholesale & retail | 2026 |
| 2 & 2C Fratton Road Ltd | Extraterritorial | 2022 |
| 2 Alhambra Road Limited | Households | 2001 |
| 2 Elphinstone Road Management Company Limited | Households | 2021 |
| 2 Nightingale Limited | Households | 2017 |
| 2 South Parade Administration Limited | Households | 2024 |
| 2 South Parade Limited | Households | 2021 |
| 2-12 Warburton Gardens RTM Company Limited | Households | 2023 |
| 20 Campbell Road (Southsea) RTM Company Limited | Real estate | 2015 |
| 20 VRN RTM Company Limited | Extraterritorial | 2009 |
| 21 Osborne Road Management Company Limited | Professional & scientific | 2004 |
| 21 Waverley Grove Limited | Households | 1995 |
| 22 ST Ronans Road RTM Company Limited | Households | 2022 |
| 22 Whitwell Road Limited | Households | 2024 |
| 25 Bath Square Management Company Limited | Households | 2004 |
| 26 Nelson Road Management Company Ltd | Households | 2017 |
| 27 Salisbury Road Management Company Limited | Real estate | 2010 |
| 27 South Parade Limited | Households | 2002 |
| 28 Merton Road RTM Company Limited | Households | 2025 |
| 28 ST Ronans Road Management Company Limited | Hospitality | 1992 |
| 28 Villiers Road Southsea Management Company Limited | Real estate | 2017 |
| 299 Highland Road (Freehold) Limited | Households | 2012 |
| 299 Highland Road RTM Company Limited | Hospitality | 2009 |
| 3 Beach Road (Southsea) Limited | Real estate | 2004 |
| 3 Boysro Limited | Hospitality | 2022 |
| 30 Merton Road RTM Company Limited | Households | 2025 |
| 30 Nelson Road Freehold Limited | Households | 2022 |
| 30 Shaftesbury Road Limited | Households | 2008 |
| 31 Nightingale Road Limited | Households | 2006 |
| 31 Shaftesbury Road Southsea Limited | Households | 2002 |
| 33 Granada Road Management Limited | Real estate | 2008 |
| 33 Shaftesbury Road Flats A-D RTM Company Limited | Households | 2024 |
| 33 Shaftesbury Road Property Management Limited | Households | 2012 |
| 35 ST Andrews Road Management Limited | Real estate | 2017 |
| 35 Victoria Road North Management Company Limited | Real estate | 2017 |
| 350GSM Limited | Professional & scientific | 2013 |
| 36 Taswell Road Management Ltd | Households | 2026 |
| 37 Ashburton Road Limited | Households | 2020 |
| 37 Ltd | Health & social care | 2023 |
| 38 Elphinstone Road RTM Company Limited | Households | 2010 |
| 38 Nelson Road (Southsea) Freehold Ltd | Administrative & support | 2018 |
| 39 Nightingale Road Limited | Real estate | 2017 |
| 3C Evolution Limited | Construction | 2020 |
| 3DOTTS Limited | Wholesale & retail | 2025 |
| 3S and D Limited | Construction | 2003 |
| 4 Netley Road Limited | Households | 2007 |
| 40, Taswell Road Management Limited | Hospitality | 1988 |
| 41 Ashburton Road Management Company Limited | Households | 2005 |
| 41 Nightingale Management Limited | Real estate | 2016 |
| 41 Queens Road Portsmouth Limited | Households | 1999 |
| 43 Shaftesbury Road Management Company Limited | Real estate | 2012 |
| 43-45 ELM Grove RTM Company Limited | Households | 2019 |
| 4468 Technology Limited | Information & communication | 2018 |
| 46 Clarence Parade Management Limited | Households | 2010 |
| 46 Shaftesbury Road RTM Company Limited | Households | 2021 |
| 48 Shaftesbury Road RTM Company Limited | Households | 2013 |
| 49 Kent Road Ltd | Professional & scientific | 2023 |
| 4ORME Ltd | Wholesale & retail | 2020 |
| 5 Auckland Road Residents Ltd | Households | 2017 |
| 5 Star Fibre Glass Ltd | Construction | 2022 |
| 5 Victoria Road North RTM Company Ltd | Households | 2013 |
| 55 Marmion Road Management Limited | Households | 1996 |
| 56 ST. Andrews Road Southsea Limited | Real estate | 2002 |
| 57-61 White Hart Road RTM Company Limited | Households | 2020 |
| 57A Ltd | Real estate | 2024 |
| 59 Granada Road RTM Company Limited | Households | 2017 |
| 6 & 7 South Parade Southsea Residents Co. Limited | Hospitality | 2001 |
| 6 Canvas Ltd | Wholesale & retail | 2023 |
| 62 ST Andrews Road RTM Company Limited | Households | 2021 |
| 65 Lawrence Road Limited | Real estate | 2012 |