| David Rumsey Dressage Ltd | Faversham | 2012 |
| David Runciman (Poultry) Limited | Galashiels | 2019 |
| David Samuel Limited | | 1983 |
| David Sanderson Ltd | Wisbech | 2006 |
| David Stennett Limited | Bury St Edmunds | 1956 |
| David Swinbank Limited | Richmond | 2015 |
| David Sykes Limited | Oldham | 2003 |
| David Thompson Enterprises Ltd | Sidmouth | 1989 |
| David Ticquet Limited | Colchester | 2007 |
| David Turner & Co Limited | Saffron Walden | 2010 |
| David Udale Ltd | Telford | 2009 |
| David Veevers Limited | Maidstone | 2010 |
| David W Rhodes Limited | Melton Mowbray | 2015 |
| David W Vincent Ltd | Cirencester | 2014 |
| David W.Hunt Limited | Ower, Romsey | 1987 |
| David Ward (Newton) Limited | King'S Lynn | 1961 |
| David Ward Firewood Limited | Ludlow | 2005 |
| David Warnes & Co.Limited | Lowestoft | 1964 |
| David Wilson Fishing Limited | Buckie | 2007 |
| David Wingrove Horses Limited | Halesowen | 2018 |
| David Woodcock Limited | East Yorkshire | 2011 |
| Davidal Ltd | Swindon | 2022 |
| Davidholmeslockerbie Ltd | Lockerbie | 2026 |
| Davidson Farms Limited | Forfar | 2015 |
| Davidson Fencing Contractors Ltd | Moffat | 2012 |
| Davidson Tree Services Ltd | Perth | 2024 |
| Davidstow & Westmoor Commons Limited | Launceston | 2002 |
| Davidstow Creamery Direct Ltd | Launceston | 2004 |
| Davie Family Limited | Skegness | 2009 |
| DAVIEGARDENS2021 Ltd | Ruislip | 2021 |
| Davies (Implements) Limited | Carmarthen | 1958 |
| Davies A'I Gwmni CYF | Pwllheli | 2024 |
| Davies Agri (Wales) Ltd | Ammanford | 2023 |
| Davies Agriculture Limited | Salisbury | 2013 |
| Davies Breeding Kennels Limited | Aberystwyth | 2023 |
| Davies Brothers Nursery Limited | Harrow | 2013 |
| Davies Brothers Ynysybwl Limited | Pontypridd | 2013 |
| Davies Contracting Limited | Peterborough | 2013 |
| Davies Farms (Carew) Limited | Tenby | 1969 |
| Davies Forestry and Wildlife Management Ltd | Moffat | 2023 |
| Davies Parry (Oakfields) Limited | Shrewsbury | 2015 |
| Davies Penralltddu Limited | Fishguard | 2015 |
| Davies Penywal Farm Limited | Pontypridd | 2025 |
| Davies Tree Services Limited | Birmingham | 2019 |
| Daviesamaeth CYF | Kidwelly | 2026 |
| Davinci Food and Wines Limited | Eye | 2008 |
| Davira Carpentry Limited | Hemel Hampstead | 2017 |
| Davis Agricultural Contracting Ltd | Wells | 2013 |
| Davis Farm Limited | Edinburgh | 2023 |
| Davis Farming Company Ltd | Oswestry | 2025 |
| Davis Tree Care & Landscape Services Ltd | Kington | 2023 |
| Davison & Co. (Barford) Limited | Great Barford | 1959 |
| Davison & Co. (Potco) Limited | Bedfordshire | 2025 |
| Davison Canners Limited | Craigavon | 1978 |
| Davlin Fishing Company Limited | Cawdor | 1996 |
| Davval Limited | Nantwich | 2005 |
| Davy-James Limited | Glasgow | 1994 |
| DAW Farms Limited | Sandwich | 2010 |
| DAW Utilities Ltd | Woodbridge | 2020 |
| Dawe (Farmers) Limited | Yelverton | 1972 |
| Dawe Estates Limited | Thetford | 1996 |
| Dawn Carradine Inett Limited | Stourbridge | 2024 |
| Dawn Shellfish Limited | Isle Of South Uist | 2008 |
| Dawnview Services Limited | Burnopfield | 2003 |
| Dawson Agriculture Ltd | Oldham | 2026 |
| Dawson Devon Limited | Kennoway | 2022 |
| Dawson Farms Limited | Northallerton | 2004 |
| Dawson Fishing Limited | Berwick-Upon-Tweed | 2015 |
| Dawson Grain Services Ltd | York | 2025 |
| Dawson's Tree & Gardening Services Ltd | Swindon | 2025 |
| Dawsons of Saxilby Limited | Saxilby | 1986 |
| Dawyck Estates Limited | Peeblesshire | 1923 |
| Day ASH Estate Limited | Harrogate | 2020 |
| Day Gill Farm Boarding Ltd | Bishop Auckland | 2025 |
| Day House Farms Limited | Swindon | 2012 |
| Day of the Cacti Limited | Chepstow | 2018 |
| Day Tree Fellers Ltd | Maidstone | 2023 |
| DAY2DAY Limited | Chipping Norton | 1999 |
| Dayagelle Ltd | Chadwell Heath | 2020 |
| Daydawn Nurseries Limited | Chobham | 1962 |
| Daydream Forest Limited | Tadworth | 2010 |
| Daylesford Organic Farms Limited | Uttoxeter | 2016 |
| Daylight Farming Limited | Crewe | 2012 |
| Daynes Farm Limited | Exeter | 2018 |
| DB Agri Limited | Steyning | 2013 |
| DB Bloodstock Ltd | Droitwich | 2020 |
| DB Concrete Services Limited | Leominster | 2016 |
| DB Contracting (Cambs) Limited | Cambridge | 2020 |
| DB Contracting (UK) Limited | Market Drayton | 2013 |
| DB Davies & Sons Unlimited | Crymych | 2007 |
| DB Equine Limited | Newmarket | 2026 |
| DB Gardens Grow and Flourish Community Interest Company | Hyde | 2019 |
| DB Holdco Limited | Dunfermline | 2020 |
| DB Scot Limited | Glasgow | 1994 |
| DB Trading Limited | Strabane | 2024 |
| DB Tree Care Ltd | Sheffield | 2015 |
| Dbaerialapplications Ltd | Manchester | 2025 |
| DBG (Agriculture) Ltd | North Yorkshire | 2010 |
| Dbme Corals Ltd | Ipswich | 2026 |
| DBR Farming Services Limited | Stoke-On-Trent | 2024 |