| Commercial Fire Sprinklers Ltd | Construction | 2016 |
| Compu-Dec Limited | Extraterritorial | 1998 |
| Computekh Limited | Information & communication | 2018 |
| Cordelia House Limited | Health & social care | 2018 |
| Costal Inns Holding Ltd | Real estate | 2025 |
| Crabbers Wharf Aqua Services Limited | Arts & recreation | 2024 |
| Creators Nook Ltd | Manufacturing | 2024 |
| Crecy Care Home Limited | Health & social care | 2013 |
| Crystal Coast Care and Cleaning Ltd | Administrative & support | 2026 |
| Dait 4 Change C.I.C. | Education | 2022 |
| Davalan Properties Ltd | Construction | 2025 |
| DCH 2019 Limited | Administrative & support | 2019 |
| Developing Assets (UK) Limited | Transport & logistics | 2002 |
| Developing Opportunities Limited | Real estate | 2003 |
| Dive Beyond Ltd | Education | 2019 |
| Divercity Scuba Ltd | Education | 2018 |
| DJM100 Ltd | Real estate | 2025 |
| DKW Properties Limited | Hospitality | 2019 |
| Domestic Fire Sprinklers Ltd | Construction | 2021 |
| Domestic Sprinklers Avon Limited | Construction | 2013 |
| Domestic Sprinklers Bedfordshire Limited | Construction | 2013 |
| Domestic Sprinklers Buckinghamshire Limited | Construction | 2013 |
| Domestic Sprinklers Cambridgeshire Limited | Construction | 2013 |
| Domestic Sprinklers Cheshire Limited | Construction | 2013 |
| Domestic Sprinklers Cleveland Limited | Construction | 2013 |
| Domestic Sprinklers Cumbria Limited | Construction | 2013 |
| Domestic Sprinklers Derbyshire Limited | Construction | 2013 |
| Domestic Sprinklers Dorset Limited | Public administration | 2013 |
| Domestic Sprinklers Durham Limited | Construction | 2013 |
| Domestic Sprinklers Gloucestershire Limited | Construction | 2013 |
| Domestic Sprinklers Greater Manchester Limited | Construction | 2013 |
| Domestic Sprinklers Guernsey Limited | Construction | 2013 |
| Domestic Sprinklers Hereford and Worcester Limited | Construction | 2013 |
| Domestic Sprinklers Hertfordshire Limited | Construction | 2013 |
| Domestic Sprinklers Humberside Limited | Construction | 2013 |
| Domestic Sprinklers Isle of MAN Limited | Construction | 2013 |
| Domestic Sprinklers Isle of Wight Limited | Construction | 2013 |
| Domestic Sprinklers Jersey Limited | Construction | 2013 |
| Domestic Sprinklers Kent Limited | Construction | 2013 |
| Domestic Sprinklers Lancashire Limited | Construction | 2013 |
| Domestic Sprinklers Leicestershire Limited | Construction | 2013 |
| Domestic Sprinklers Lincolnshire Limited | Construction | 2013 |
| Domestic Sprinklers Ltd | Public administration | 2000 |
| Domestic Sprinklers Merseyside Limited | Construction | 2013 |
| Domestic Sprinklers MID and West Wales Limited | Construction | 2013 |
| Domestic Sprinklers Norfolk Limited | Construction | 2013 |
| Domestic Sprinklers North Wales Limited | Construction | 2013 |
| Domestic Sprinklers North Yorkshire Limited | Construction | 2013 |
| Domestic Sprinklers Northamptonshire Limited | Construction | 2013 |
| Domestic Sprinklers Northumberland Limited | Construction | 2013 |
| Domestic Sprinklers Nottinghamshire Limited | Construction | 2013 |
| Domestic Sprinklers Shropshire Limited | Construction | 2013 |
| Domestic Sprinklers South Yorkshire Limited | Construction | 2013 |
| Domestic Sprinklers Staffordshire Limited | Construction | 2013 |
| Domestic Sprinklers Suffolk Limited | Construction | 2013 |
| Domestic Sprinklers Surrey Limited | Construction | 2013 |
| Domestic Sprinklers Tyne and Wear Limited | Construction | 2013 |
| Domestic Sprinklers Warwickshire Limited | Construction | 2013 |
| Domestic Sprinklers West Yorkshire Limited | Construction | 2013 |
| Domestic Sprinklers Wiltshire Limited | Construction | 2013 |
| Donny Meats Ltd | Hospitality | 2025 |
| Dorchester Community Plays Association | Arts & recreation | 2010 |
| Dorset Dropped Kerb and Driveways Ltd | Construction | 2025 |
| Dorset Kitchen & Joinery Solutions Ltd | Construction | 2018 |
| Dorset Prestige Clean Ltd. | Administrative & support | 2019 |
| Dorset Sea Salt Company Limited | Hospitality | 2017 |
| Dorset Treeworx Ltd | Agriculture & fishing | 2009 |
| DP Injectors Ltd | Manufacturing | 2024 |
| DRY Dock PUB CIC | Hospitality | 2023 |
| E&J Race Team Ltd | Arts & recreation | 2024 |
| Easton Chinese Ltd | Administrative & support | 2017 |
| Edgehill Care Home Limited | Health & social care | 2011 |
| Elite Solutions SW Ltd | Administrative & support | 2026 |
| Elliot Hanson Sailing Ltd | Arts & recreation | 2022 |
| Emerald ANT C.I.C. | Education | 2015 |
| Empire Warehouse Retail Ltd. | Extraterritorial | 2020 |
| Enduroman Limited | Arts & recreation | 2000 |
| Enterprise Utilities Nationwide Ltd | Professional & scientific | 2025 |
| Eric Brennan Limited | Construction | 2007 |
| Eurotubes UK Limited | Manufacturing | 1995 |
| Evolution Bricks Ltd | Wholesale & retail | 2025 |
| Expia Limited | Hospitality | 2012 |
| Exterior Cleaning Dorset Ltd | Administrative & support | 2026 |
| Flow Foiling Ltd | Arts & recreation | 2024 |
| Flying Purple Ltd | Manufacturing | 2018 |
| Fortuneswell Investments Ltd | Real estate | 2014 |
| Fortuneswell Investments NO 4 Ltd | Extraterritorial | 2017 |
| Fortuneswell Laundry Ltd | Other services | 2024 |
| G3 Systems Limited | Professional & scientific | 2001 |
| Gainsborough Care Home Limited | Health & social care | 2011 |
| Garland Services Limited | Professional & scientific | 2018 |
| Garland's Products Limited | Manufacturing | 2012 |
| Giftstheylove Ltd | Wholesale & retail | 2023 |
| Gizzygifts Ltd | Wholesale & retail | 2024 |
| GJT Aviation Training Services Ltd | Education | 2023 |
| Gladstone Mews (Portland) Management Company Limited | Households | 2017 |
| Golden Island Ltd | Hospitality | 2013 |
| Gorseway Manor Care Home Limited | Health & social care | 2018 |
| Gorseway Nursing Home Limited | Health & social care | 2018 |
| Goulds Construction & Design Limited | Construction | 2026 |