| D J Litchfield Limited | Uttoxeter | 2015 |
| D J Livestock | Moffat | 2025 |
| D J Lowe and Partners Limited | Nantwich | 2008 |
| D J M Agricultural Services Limited | Ashbourne | 2013 |
| D J Pope Limited | Princes Risborough | 2012 |
| D J Poultry Limited | Cwmbran | 2009 |
| D J Reddihough Ltd | Kelso | 2024 |
| D J Turnbull Contracting Ltd | Morpeth | 2017 |
| D J W Lloyd Limited | Brecon | 2010 |
| D K Hans Limited | | 2006 |
| D King Livestock Limited | Exeter | 2018 |
| D Kitching Agricultural Services Ltd | Penrith | 2024 |
| D L Boyce (Outwell) Ltd | Outwell | 2022 |
| D L Farming Limited | Kidwelly | 2006 |
| D L Trees and Gardens Ltd | Brentwood | 2018 |
| D Leadbetter & SON (Shellfish) Ltd | Burntisland | 2018 |
| D LL & G a Jones CYF | St. Asaph | 2022 |
| D Logan Agri Ltd | Prestwick | 2025 |
| D M & a Macleod Limited | Ross-Shire | 2005 |
| D M Carnegie | Edinburgh | 1987 |
| D M Chainsaws Ltd | Arundel | 2001 |
| D M Forestry Sevices Limited | Dalry | 2015 |
| D M OAG Agri Limited | Thurso | 2021 |
| D M Pickles Limited | Wakefield | 2002 |
| D M Poultry Limited | Wigton | 2017 |
| D M Thompson & SON (Agricultural Contractors ) Limited | Lichfield | 2005 |
| D Macinnes Associates Ltd | Isle Of Lewis | 2003 |
| D Mackay Farming Company Unlimited | Hatfield | 2012 |
| D Mackay Fishing Ltd | Tain | 2020 |
| D Mahony & Sons Limited | Northamptonshire | 2002 |
| D Mccain Racing Ltd | Malpas | 2014 |
| D Mcclelland Limited | Ayr | 2019 |
| D Mclean Limited | | 2006 |
| D Meredith Plant & Agri Services Limited | Aberdare | 2026 |
| D Middleton Mechanical & Agricultural Services Ltd | Laurencekirk | 2024 |
| D Muirhead Contractors Ltd | Campbeltown | 2006 |
| D N Quinn Limited | Liverpool | 2009 |
| D Normandale Limited | Bury St. Edmunds | 2016 |
| D O Evans CYF | Porthmadog | 2018 |
| D O Kyte & SON Ltd | Swindon | 2023 |
| D O Mccracken & Sons Ltd | Omagh | 2015 |
| D Obbard & Sons (Trading) Limited | Tunbridge Wells | 1997 |
| D P Agricultural Services Ltd | Nr. Matlock | 2024 |
| D P Forestry Limited | St. Asaph | 2016 |
| D P Morgan | Driffield | 2000 |
| D P O'Dwyer Bloodstock Limited | Gateshead | 2022 |
| D Pugh Logs Ltd | Newton Abbot | 2025 |
| D Q Boats Limited | Exeter | 2009 |
| D Quilter Ltd | Aylesbury | 2014 |
| D R & C E Williams Ltd | Stafford | 2022 |
| D R & E G Davies Limited | Llantwit Major | 2008 |
| D R a Fabb Contractors Limited | Wisbech | 2007 |
| D R and C a Stokes (Farming) Limited | Royston | 2016 |
| D R Hankin Forestry Ltd | Bordon | 2013 |
| D R Morris Farms Limited | Welshpool | 2012 |
| D R R Stranger & Sons Limited | Sturminster Newton | 2009 |
| D R Rowland & N J Woodward Limited | Hope Valley | 2014 |
| D R Wallace & Sons Limited | Dundee | 2001 |
| D R Williams Shearing Contractors Limited | Penderyn | 2019 |
| D Robertson Marine Ltd | Lerwick | 2011 |
| D S Emery and Sons Limited | Edinburgh | 2024 |
| D S Fishing & Marine Ltd | Shetland | 2017 |
| D S Fishing Ltd | Buckie | 2023 |
| D S Means Limited | King'S Lynn | 2010 |
| D Starkings Ltd | Norwich | 2008 |
| D Steele Ltd | Spalding | 2010 |
| D Stephen Professional Tree Work Limited | Dumfries | 2013 |
| D Stephens & Sons (Luckyard) Limited | Taunton | 1988 |
| D Swailes Forestry Ltd | Hawick | 2026 |
| D T & O Griffiths Ltd | Newcastle Emlyn | 2021 |
| D T Dinsdale & SON Limited | Leyburn | 2025 |
| D T Jones & SON Limited | Ruthin | 2003 |
| D T Loose Shellfish Limited | King'S Lynn | 2013 |
| D T Timber Limited | Norwich | 2022 |
| D V & J a Pettitt Limited | Royston | 2014 |
| D W Argo Limited | Kincardineshire | 1959 |
| D W Brook & SON Ltd | Huddersfield | 2006 |
| D W Eardley Limited | Market Drayton | 2012 |
| D W Fishing (Shetland) Ltd | Shetland | 2014 |
| D W Ford & SON Goats Limited | Dorchester | 2014 |
| D W G Smith Limited | Swanage | 2002 |
| D W Marley Limited | North Yorkshire | 2006 |
| D W Oliver Tree Services Ltd | Wiltshire | 2007 |
| D W P Fishing Limited | Brixham | 2017 |
| D W Squier Limited | Essex | 2014 |
| D W Taylor & Sons Ltd | Blandford Forum | 1988 |
| D W Tree Services Limited | Huddersfield | 2004 |
| D W Whitson Ltd | Wigton | 2014 |
| D Walker (Agri) Ltd | Workington | 2018 |
| D Warwick Plant Ltd | West Lothian | 2026 |
| D Watts Limited | Norwich | 2017 |
| D White Farms Limited | Sidmouth | 2013 |
| D Williams Services Limited | Stowmarket | 2018 |
| D&B Farming Company Limited | Grantham | 2014 |
| D&B Tree Services Limited | Chepstow | 2021 |
| D&C Equestrian Ltd | Harlow | 2026 |
| D&C Mcelroy Ltd | Castlewellan | 2025 |
| D&D Daycare Ltd | Motherwell | 2026 |
| D&D Groundcare and Forestry Ltd | Lochwinnoch Road | 2020 |
| D&D Honey UK Ltd | Crawley | 2023 |