| M a Hones Ltd | Abingdon | 2008 |
| M a J Jarrold Limited | Pembroke | 2002 |
| M a Johnson Limited | London | 2012 |
| M a K Plant Services Ltd | Biggar | 2017 |
| M a R Agri Ltd. | Buckingham | 2007 |
| M a Ward Farms Ltd | Ipswich | 2013 |
| M and D Poultry Limited | Halifax | 2013 |
| M and R Morton Limited | Alresford | 1998 |
| M and R S Bodrida Ltd | Porthmadog | 2023 |
| M and S Arable Limited | Chesterfield | 2016 |
| M and S Farms and Haulage Ltd | Derby | 2009 |
| M Archer Agricultural Services Ltd | Bridgnorth | 2021 |
| M Archer and SON Limited | Lancaster | 2012 |
| M B Agri Ltd | Drakes Broughton | 2026 |
| M B Aquarius Limited | Buckie | 2003 |
| M B Fishing Limited | Narberth | 2017 |
| M B Game Consultancy Limited | Leyburn | 2003 |
| M B Hodgson & SON Limited | Milnthorpe | 1999 |
| M B Riley Farms Limited | Burnley | 2021 |
| M Bailey Trading Limited | Liverpool | 2014 |
| M Brears & Sons Limited | Goole | 2011 |
| M Buist Ltd | Turriff | 2024 |
| M C & J C Ballantyne Ltd | Brora | 2022 |
| M C Attwood Limited | Sittingbourne | 2012 |
| M C Jarvis Ltd | Colchester | 2012 |
| M C Kershaw Contracting Ltd | Southport | 2011 |
| M C Whittle Ltd | Bristol | 2020 |
| M Canavan Associates Limited | Ripon | 2003 |
| M Cardno Fishing Ltd | Fraserburgh | 2013 |
| M Clingo Farrier Limited | Nuneaton | 2017 |
| M D Day Woodland Contractor Ltd | Frome | 2002 |
| M D Evans Farriery Ltd | Bedford | 2021 |
| M D Grey Limited | Chippenham | 2017 |
| M D Hanafin and Sons Limited | Morecambe | 2000 |
| M D Pyle Limited | Honiton | 2011 |
| M Dungait & Sons Limited | Morpeth | 1997 |
| M E Potter (Farms) Limited | Welshpool | 1997 |
| M E Tong Limited | Shrewsbury | 2013 |
| M F & K C Stobart Limited | Barnard Castle | 2006 |
| M F Styles Stock & Agri Services Ltd | Llanelli | 2020 |
| M F V Harmony Limited | Portree | 2003 |
| M Falcon Limited | Birmingham | 2023 |
| M Fence Ltd | Lairg | 2026 |
| M Field Limited | Driffield | 2023 |
| M Frost Farming Ltd | Ely | 2024 |
| M G Robson Forestry Contracting Limited | Hawick | 2016 |
| M G & S Harper Limited | Maryport | 2014 |
| M G B Fishing Limited | Milford Haven | 2024 |
| M G Farms Limited | Attleborough | 2021 |
| M G Farriery Limited | Billericay | 2008 |
| M G Fordham Limited | Nr Honiton | 2003 |
| M G Gall Ltd | Ellon | 2019 |
| M G Grainger Limited | Bath | 2003 |
| M G Harvesting Limited | Bala | 2002 |
| M G Roberts CYF | Porthmadog | 2018 |
| M G Smith Limited | Shalden | 2018 |
| M G Whitwell Ltd | Rochdale | 2013 |
| M H Agriculture Ltd | High Wycombe | 2024 |
| M H Cockell & Co Ltd. | Herstmonceux | 1977 |
| M H R Hicks Leisure Limited | Burnham-On-Sea | 2006 |
| M Hawkswell Contracting Limited | York | 2017 |
| M Hyland Poultry Ltd | Blackburn | 2016 |
| M J & C Cockburn Limited | Kirkby Stephen | 2007 |
| M J & D a Johnson Ltd | Taunton | 2011 |
| M J & L E Grinter Limited | Taunton | 2019 |
| M J Amack Fishing Company Ltd | Shetland | 2014 |
| M J Ardolino & SON Ltd | Llandovery | 2021 |
| M J Austin Ltd | Newport | 2015 |
| M J B Fishing Limited | Barrow In Furness | 2022 |
| M J Bendall and Partners Limited | Chippenham | 2008 |
| M J Bircham & SON Forestry Contractors Ltd | Cambridge | 2020 |
| M J Bragg and SON Limited | Crediton | 2002 |
| M J Caine & Sons Limited | Sheffield | 2008 |
| M J Contracts (N.I.) Limited | Armagh | 2019 |
| M J Cook Farming Limited | Bungay | 2017 |
| M J Downing Ltd | Rotherham | 2012 |
| M J Enoch Tree Surgery Limited | Colchester | 2011 |
| M J Gallagher Limited | Newport | 2025 |
| M J Garrod and Sons Ltd | Diss | 2012 |
| M J Gent Farms Limited | Spalding | 2010 |
| M J Girking Limited | Driffield | 1992 |
| M J L Contracts Limited | Ruislip | 2008 |
| M J Law Limited | Nantwich | 2020 |
| M J Lynch Agriculture Limited | Exmouth | 2015 |
| M J Madkins Limited | Milton Keynes | 2017 |
| M J Maybury Ltd | Colne | 2022 |
| M J Meredith Orchard Services Limited | Hereford | 2017 |
| M J O Forestry Limited | Chichester | 2003 |
| M J Parker Ltd | Shrewsbury | 2014 |
| M J Petty Limited | Haynes | 2009 |
| M J R H Contracts Limited | Stow On The Wold | 2003 |
| M J Robinson Tractors Limited | Clayton Le Moors | 2008 |
| M J Scott Forestry Contractor Ltd | Forres | 2017 |
| M J Snow Contracting Limited | Newton Abbot | 2003 |
| M J Stallard Limited | Ivybridge | 2002 |
| M J Tilney Ltd | Norwich | 2012 |
| M J Tosdevine Limited | Petersfield | 2010 |
| M J Tromans Limited | Kingswinford | 2026 |
| M J Western Ltd | Winkleigh | 2012 |
| M J Willow Care Limited | Cheshunt | 2023 |