| 1 ST Martin's Court Management Company Limited | Households | 2009 |
| 1 to 7 Park Court Limited | Households | 1990 |
| 1-2-3 Business Management Limited | Extraterritorial | 2003 |
| 10 - 12 Greenhill Weymouth Management Limited | Real estate | 2006 |
| 10 Glendinning Avenue Management Company Limited | Households | 2007 |
| 108 the Esplanade Management Company Ltd. | Households | 2024 |
| 109 the Esplanade Management Company Ltd. | Households | 2024 |
| 109 Watersports Ltd | Wholesale & retail | 2012 |
| 109 Wetsuits Ltd | Wholesale & retail | 2021 |
| 11 Dorchester Road Limited | Households | 2010 |
| 11 East Street Weymouth Management Company Limited | Real estate | 2025 |
| 11 Gloucester ROW Limited | Households | 2018 |
| 113 the Esplanade (Weymouth) Limited | Households | 1999 |
| 123 on the Sea Limited | Hospitality | 2025 |
| 13-27 Peverell Avenue East Management Company Limited | Households | 2003 |
| 135 Dorchester Road Management Company Limited | Households | 2009 |
| 14 Crown Street West (Poundbury) Management RTM Company Limited | Households | 2025 |
| 145 Dorchester Road Limited | Households | 2007 |
| 147 Dorchester Road Weymouth Management Limited | Real estate | 2008 |
| 151 Dorchester Road Management Company Limited | Households | 1988 |
| 17 Commercial Road (Management) Limited | Households | 2009 |
| 18 Preston Road Management Company Limited | Households | 2016 |
| 18-25 Dunnabridge Square Management Company Limited | Households | 2006 |
| 19 Great George Street Management Company Limited | Households | 1990 |
| 1QMF Limited | Hospitality | 2024 |
| 1ST Line Ltd | Professional & scientific | 2008 |
| 1ST Rate Ltd | Construction | 2003 |
| 2 Ullswater Crescent Management Company Limited | Households | 1994 |
| 20 Crescent Street Weymouth Management Limited | Households | 2007 |
| 20 Hudds Hill Road Bristol Management Company Limited | Households | 2019 |
| 21 Bincleaves Road Weymouth Management Company Limited | Households | 2016 |
| 21 Carlton Road North Management Co Ltd | Households | 1997 |
| 21 Great George Street Weymouth Management Limited | Extraterritorial | 2014 |
| 21ST Century Mindset Limited | Professional & scientific | 2015 |
| 22 Lennox Street Management Company Limited | Households | 2007 |
| 23 Commercial Road Weymouth Management Limited | Extraterritorial | 2012 |
| 23 Ranelagh Road Management Limited | Households | 1991 |
| 24 Greenhill Residents Management Company Limited | Real estate | 2003 |
| 24/7 Contracting Limited | Construction | 2014 |
| 25-27 Alexandra Road Management Company Ltd | Households | 2019 |
| 250 North Road West Limited | Hospitality | 1992 |
| 26 Easton Square Management Company Limited | Real estate | 2013 |
| 2XPD8 Limited | Professional & scientific | 2002 |
| 3 Lansdowne Square Weymouth Limited | Real estate | 1987 |
| 30/32 Spiller Road Limited | Households | 1987 |
| 31 Buxton Road Management Company Limited | Households | 2018 |
| 31 Sussex Road (Weymouth) Management Co Limited | Households | 2009 |
| 32 Crescent Street Weymouth Management Limited | Households | 1997 |
| 3200 Ltd | Arts & recreation | 2014 |
| 34 Canberra Road Flat Management Co Ltd | Households | 2024 |
| 35 Spa Road Management Company Limited | Households | 2016 |
| 36 the Esplanade (Weymouth) Limited | Hospitality | 2024 |
| 37 East Street Weymouth Management Company Limited | Households | 2019 |
| 38 Abbotsbury Road (Weymouth) Ltd | Households | 2002 |
| 38 Holdings Limited | Real estate | 2022 |
| 3A Glendinning Avenue Weymouth Limited | Households | 2008 |
| 3SC Group Scaffolding Limited | Construction | 2025 |
| 3SC Scaffolding Hire & Sales Ltd | Administrative & support | 2019 |
| 3SC Scaffolding Ltd | Construction | 2019 |
| 4 Gloucester Street Management Company (Weymouth) Ltd | Hospitality | 2006 |
| 4 Rodwell ST Ltd | Real estate | 2024 |
| 4 Turton Street Limited | Households | 2017 |
| 40 ST. Thomas Street Management Limited | Households | 2012 |
| 41 Hardwick Street (Weymouth) Management Company Limited | Households | 2002 |
| 42 Lennox Street Management Limited | Households | 2002 |
| 43 East Street Management Limited | Real estate | 2024 |
| 46 Park Street Weymouth Ltd | Wholesale & retail | 2013 |
| 4ADVENTURE Holdings Limited | Administrative & support | 2013 |
| 52 Abbotsbury Road Weymouth Limited | Households | 1993 |
| 59 Dorchester Road Management Company Ltd. | Households | 2024 |
| 6 Abbotsbury Management Company Ltd | Households | 2014 |
| 6 Carlton Road North Weymouth (2) Management Limited | Households | 2006 |
| 6 Cranford Avenue Management Company Limited | Households | 2008 |
| 6 Greenhill Management Company Limited | Households | 2007 |
| 61 Great George Street Limited | Real estate | 2022 |
| 7 Crescent Street RTM Company L Ltd | Households | 2026 |
| 82 Lanehouse Rocks Road Management Company Limited | Households | 2004 |
| 84 Franchise Street Ltd | Real estate | 2024 |
| 88 ST. Leonards Road Management Company Limited | Hospitality | 1987 |
| 89-92 Granby Close Limited | Households | 2024 |
| 89A the Esplanade RTM Company Limited | Households | 2022 |
| 9 Westham Road (Weymouth) Ltd | Real estate | 2008 |
| 90NETWORKS Ltd | Information & communication | 2023 |
| 93 Dorchester Road Management Company Limited | Households | 2019 |
| 95 Wyke Road Management Company Ltd | Households | 2021 |
| A & M Community Services Ltd | Administrative & support | 2024 |
| A & M Roofline Limited | Construction | 2015 |
| A & N Foods Ltd | Wholesale & retail | 2020 |
| A & P Travel Limited | Transport & logistics | 2004 |
| A & R Trading Estate Limited | Real estate | 2012 |
| A 2 Z Adventures Ltd | Arts & recreation | 2015 |
| A a Aviation Services Ltd | Transport & logistics | 2024 |
| A and P Drainage Limited | Water & waste | 2016 |
| A Clyne Limited | Construction | 2008 |
| A G Osmond Surveys Limited | Professional & scientific | 2012 |
| A J S Developments Limited | Construction | 1992 |
| A K C Building Ltd | Real estate | 2009 |
| A Sense of Place Ltd | Arts & recreation | 2024 |
| A Star Automotive Ltd | Wholesale & retail | 2024 |
| A Star Cleaning Services Dorset Ltd | Administrative & support | 2023 |