| 25 Forest Road Residents Management Company Limited | Other services | 2016 |
| 25 Mckinley Road Freehold Limited | Households | 2022 |
| 25 Studland Road (Alum Chine) Management Company Limited | Households | 2015 |
| 251 Marketing Ltd | Professional & scientific | 2020 |
| 27 Sandringham Road Management Company Limited | Households | 1997 |
| 27 Springfield Road (Poole) Freehold Limited | Households | 2017 |
| 27 Springfield Road (Poole) Management Limited | Households | 1988 |
| 288 Property Management Ltd | Real estate | 2015 |
| 288 Whitesands UK Limited | Real estate | 2017 |
| 28A DR Ltd | Real estate | 2024 |
| 28CFR Ltd | Real estate | 2023 |
| 2BROTHERS Cooling Ltd | Construction | 2024 |
| 2BROTHERS Heat Pumps Ltd | Construction | 2025 |
| 2BROTHERS Mechanical and Electrical Ltd | Construction | 2025 |
| 2BROTHERS Renewables Ltd | Construction | 2024 |
| 2BROTHERS Solar Ltd | Construction | 2025 |
| 2GETHER Opportunities Limited | Financial services | 2007 |
| 2ITRADE Ltd | Wholesale & retail | 2024 |
| 2PV Rentals Limited | Real estate | 2016 |
| 3 RG Associates Limited | Administrative & support | 2003 |
| 3 Vista Limited | Financial services | 2012 |
| 30 Conway Road Block MGT Ltd | Households | 2022 |
| 30 Greenhill Limited | Households | 2001 |
| 30 Tower Road Management Company Limited | Households | 2019 |
| 308 Grace Ltd | Wholesale & retail | 2024 |
| 309 a B C Redee Ltd. | Households | 2018 |
| 31 Adolphus Road Limited | Households | 2005 |
| 31 Property Ltd | Real estate | 2019 |
| 31-45 Dawkins Road Hamworthy Limited | Households | 2003 |
| 31/33 Commercial Road Management Co Ltd | Real estate | 2008 |
| 32 Brailswood RD Property Management Company Ltd | Households | 2021 |
| 33 and 35 Furzey Road Management Limited | Households | 2003 |
| 34 Sherford Ltd | Financial services | 2026 |
| 34 Westovercliff Limited | Construction | 2023 |
| 34 Westovercliff Property Ltd | Real estate | 2025 |
| 34R Limited | Wholesale & retail | 2025 |
| 35 Nelson Road (Poole) Ltd | Real estate | 2011 |
| 351 Sails and Services Limited | Arts & recreation | 2022 |
| 36 Jolliffe Road RTM Company Limited | Households | 2011 |
| 360 Degree Sports Coaching Dorset Ltd | Education | 2021 |
| 360 Digital Ltd | Professional & scientific | 2011 |
| 360 Property & Developments Ltd | Professional & scientific | 2020 |
| 365 Umbrella Ltd | Professional & scientific | 2022 |
| 37 Hawkwood Road Limited | Households | 2004 |
| 38 Hastings Road Management Company Limited | Households | 1980 |
| 38 Purbeck Road Ltd | Real estate | 2021 |
| 3AM Holdings Ltd | Financial services | 2022 |
| 3BM Design Limited | Other services | 2018 |
| 3CROSSFIRE Limited | Professional & scientific | 2006 |
| 3D Capital Partners Ltd | Real estate | 2024 |
| 3D CNC Limited | Manufacturing | 2008 |
| 3D Partners Network Ltd | Wholesale & retail | 2022 |
| 3D Printing Dorset Ltd | Manufacturing | 2022 |
| 3D-LAYER Ltd | Professional & scientific | 2025 |
| 3D-PROTOTYPE Ltd | Manufacturing | 2013 |
| 3F Developments Ltd | Construction | 2023 |
| 3FL Consulting Limited | Professional & scientific | 2011 |
| 3G1B Investments Limited | Real estate | 2016 |
| 3HIVE Holdings Limited | Financial services | 2022 |
| 3HIVE Ltd. | Health & social care | 2020 |
| 3JE Consulting Limited | Professional & scientific | 2020 |
| 3LINE Electrical Wholesale Limited | Wholesale & retail | 2008 |
| 3LINE Holdings Limited | Financial services | 2015 |
| 3MB Group Limited | Information & communication | 2022 |
| 3RG Limited | Other services | 2006 |
| 3RG Maritime Security Ltd | Administrative & support | 2011 |
| 3W Digital Ltd | Information & communication | 2008 |
| 3Z Money Ltd | Financial services | 2025 |
| 4 Belvedere Road Freehold Limited | Households | 2017 |
| 4 Candles Holdings Ltd | Administrative & support | 2025 |
| 4 Earle Road (Freehold) Company Limited | Administrative & support | 1997 |
| 4 Walls Inventory Services Limited | Real estate | 2014 |
| 40 James ST OX4 Ltd | Real estate | 2004 |
| 402 Club Ltd | Education | 2024 |
| 408 High Street Store Limited | Wholesale & retail | 2026 |
| 41 Wortley Road Ltd | Real estate | 2016 |
| 42 Construction Ltd | Construction | 2011 |
| 42 Property Group Limited | Real estate | 2021 |
| 420 Lymington Road (Management) Company Limited | Households | 2017 |
| 43-45 Wimborne Road Ltd | Real estate | 2025 |
| 44 Clothing Limited | Wholesale & retail | 2023 |
| 46 Media Limited | Information & communication | 2005 |
| 46,48 & 50 Wellington Street Management Company Limited | Real estate | 2024 |
| 460 Ltd | Construction | 2017 |
| 47 Alumhurst Road RTM Company Limited | Households | 2018 |
| 470 Ringwood Road Management Company Limited | Real estate | 2016 |
| 48 Kings Avenue Management Company Limited | Households | 1996 |
| 4C Diamonds Limited | Wholesale & retail | 2023 |
| 4EPOS Limited | Wholesale & retail | 2006 |
| 4GEN Solutions Ltd | Extraterritorial | 2017 |
| 4M Company BR Limited | Wholesale & retail | 2025 |
| 4REEM.INC Ltd | Professional & scientific | 2018 |
| 4TWENTY2 Limited | Professional & scientific | 2007 |
| 4US Holding Ltd | Financial services | 2024 |
| 4VENTS Solutions Ltd | Professional & scientific | 2024 |
| 4WARD Social Care Services Ltd | Health & social care | 2023 |
| 5 - 8 Fishermans Wharf RTM Company Limited | Households | 2020 |
| 5 Berners Street Management Company Limited | Households | 2017 |
| 5 Churchill Road Ltd | Real estate | 2023 |
| 5 Star TLC Limited | Health & social care | 2012 |