| Daucina Charters Ltd | Kings Lynn | 2017 |
| Dauntless (Scotland) Ltd | Fraserburgh | 2026 |
| Dav-Tropical Group Limited | Glasgow | 2025 |
| Dava Farms Limited | Kingussie | 2016 |
| Davaar Marine Conservation Initiative Ltd | Campbeltown | 2024 |
| Davbarr Kennels Limited | Goole | 2006 |
| Dave Ainsworth Ltd | Lancaster | 2008 |
| Dave Creed & Sons Ltd | Yeovil | 2010 |
| Dave Jones Contract Farrier Ltd | Llandysul | 2023 |
| Dave Loughnane Racing Limited | Market Drayton | 2020 |
| Dave Pickles (Timber) Limited | Wakefield | 2005 |
| Dave Rushen Reptiles Ltd | Southampton | 2017 |
| Dave's Operator Hire Limited | Ellesmere | 2012 |
| Davenport Stables Limited | Sandbach | 2012 |
| Davey Seafish Limited | Worthing | 2011 |
| David Alston (Norfolk) Limited | Norfolk | 1955 |
| David Armstrong Farms Limited | Lincolnshire | 2003 |
| David Ashton Limited | Boston | 1999 |
| David Baird (Whitemoss) Limited | Renfrewshire | 1952 |
| David Baker Farms Limited | Bungay | 1997 |
| David Barnett Farms Limited | Brackley | 1960 |
| David Bartlet & SON Ltd | Ellon | 2025 |
| David Bickerstaff Fishing Limited | Brighton | 2019 |
| David Black & SON Limited | Stowmarket | 1956 |
| David Blair Services Ltd | Johnstone | 2021 |
| David Blake Farriery Limited | Lower Stow Bedon | 2024 |
| David Bowman Pumpkins Limited | Spalding | 2009 |
| David Breaks Livestock Ltd | Burnley | 2020 |
| David Britnell Eventing Ltd | Cambridge | 2024 |
| David Broster Limited | Huddersfield | 1987 |
| David Brown (Farms) Limited | Moray | 1995 |
| David Buchan Marine Ltd | Peterhead | 2019 |
| David Buckeridge Investigations Limited | Sandown | 2006 |
| David Butler (Agricultural Contracting) Limited | Cambridge | 1977 |
| David Butler Ltd | Romsey | 2018 |
| David Cargill (Farms) Limited | Saxmundham | 1997 |
| David Clark Farms Limited | Maidstone | 1954 |
| David Cliff Limited | Derby | 1973 |
| David Cross and SON Limited | Bury St Edmunds | 1986 |
| David Croxton Limited | Taunton | 1981 |
| David Cuttle Limited | Belfast | 1991 |
| David Davies Management Services Ltd | Cardigan | 2006 |
| David Davies Resources Ltd | Shrewsbury | 2010 |
| David Douglas (Farms) Limited | Eastbourne | 1976 |
| David Fairfull Limited | Glasgow | 2014 |
| David Farms Limited | Aylesbury | 1996 |
| David Fenner Ltd | Haywards Heath | 2014 |
| David Foot Limited | Weymouth | 1960 |
| David FOX Agricultural Contractors Limited | Scunthorpe | 2014 |
| David Gwillim Honey Farm Limited | Ashford | 2024 |
| David Hall Farriers Ltd | Stroud | 2017 |
| David Hares Landscape Architecture Limited | Exeter | 2014 |
| David Harriott Limited | Chichester | 2014 |
| David Hart (Saltway) Limited | Redditch | 2014 |
| David Hill (Agricultural Contractor) Limited | North Yorkshire | 2003 |
| David Hill (Skipton) Limited | North Yorkshire | 2001 |
| David Hitchings (Broadchalke) Limited | Oswestry | 1961 |
| David Holmes Livestock Trading Ltd | Lockerbie | 2018 |
| David Holpin (Farms) Limited | Stonehouse | 1997 |
| David Howard Farms Limited | Brede,Near Rye | 1985 |
| David Hughes Agricultural Consultancy Ltd | Cheshire | 2003 |
| David Hunt Agricultural Contractors Ltd | Frome | 2021 |
| David J Barker Ltd | Loughborough | 2003 |
| David J Cotton Agri Services Limited | Burton On Trent | 2003 |
| David J Watts Limited | Rugby | 2016 |
| David Jack Ltd | Fraserburgh | 2021 |
| David Jermy Limited | Lowestoft | 1976 |
| David Jibson Agricultural Contractor Limited | Driffield | 2012 |
| David John Lowe Limited | Wigan | 2012 |
| David Knight Services Ltd | Tythegston | 2015 |
| David Leyland Trading Limited | Liverpool | 2014 |
| David Loads (Farms) Limited | Norwich | 1973 |
| David Lockhart Agricultural Machinery Limited | Huntingdon | 2014 |
| David Lodge Farming Limited | Wetherby, Leeds | 2021 |
| David Lumgair and Sons Limited | Forfar | 2016 |
| David Mackie & Sons Limited | | 1997 |
| David Magness Farms Limited | Saffron Walden | 1975 |
| David Mcclements & Sons Limited | Newtownards | 1979 |
| David Mckay Ltd. | Findochty | 2008 |
| David Michael Hussey Limited | Sawbridgeworth | 2007 |
| David Nature Developers Ltd | London | 2025 |
| David Newman Contractors Limited | Swindon | 2012 |
| David Nichol Forestry Ltd. | Kelso | 2009 |
| David Nicol (Fishing Services) Limited | Fraserburgh | 2008 |
| David O'Meara Bloodstock Ltd | York | 2015 |
| David O'Meara Racing Ltd | York | 2009 |
| David O. Jones Limited | Lydbury North | 1963 |
| David O.V. Ltd. | Aberdeenshire | 2004 |
| David Owens Farrier Limited | Stirling | 2008 |
| David Parry Consulting Services Limited | Warrington | 2014 |
| David Patience Ltd | Inverness | 2016 |
| David Peters Farms Limited | Amlwch | 1972 |
| David Postance & SON Ltd | Cardigan | 2010 |
| David Price (Whitby) Limited | Middlesbrough | 2008 |
| David Prince (Agricultural) Limited | Derby | 2004 |
| David Pull | Hunstanton | 1960 |
| David Randall Tree Consultancy Ltd | Reading | 2025 |
| David Redvers Bloodstock Ltd | Gloucester | 2007 |
| David Roper Fishing Ltd | Prestwick | 2022 |
| David Rose (Farms) Limited | Worcestershire | 1962 |