| Moorefield Farm Limited | Sutton Coldfield | 2018 |
| Moorend Lane Ltd | Thame | 2004 |
| Moorend Woodland Limited | Cheltenham | 1997 |
| Moores Gypsy Cobs and General Dealers S/East Limited | Eastbourne | 2016 |
| Moores Gypsy Cobs Limited | Heathfield | 2021 |
| Moores of Froxton Limited | Holsworthy | 1967 |
| Moorestaff Ltd | Merthyr Tydfil | 2024 |
| Moorestown Equine Services Limited | Newtownards | 2022 |
| Moorewood Machinery Limited | Leicester | 2016 |
| Moorfoot Capital Management Limited | Edinburgh | 2004 |
| Moorhen Trout Fishery Ltd | Hampshire | 2007 |
| Moorhill Farming Company Limited | Gillingham | 2023 |
| Moorhouse Farm Investments Limited | Nottingham | 2020 |
| Moorland & Meadow Restoration Limited | Whitby | 2006 |
| Moorland Biomass Ltd | Richmond | 2024 |
| Moorland Falconry Supplies Limited | Mansfield | 2018 |
| Moorland Paws Ltd | York | 2025 |
| Moorland Poultry Limited | Derby | 1987 |
| Moors Covert Farm Ltd | Wigton | 2025 |
| Moorsbarrow Hall Farm Ltd | Middlewich | 2023 |
| Moorside Farm Supplies Limited | Saltburn | 1998 |
| Moorside Mushrooms Ltd | York | 2023 |
| Moortown Farms Limited | Ringwood | 1946 |
| Moorview Kennels & Cattery Limited | Harrogate | 2012 |
| Moorview Luxury Boarding Limited | Harrogate | 2024 |
| Moorview Rescue Limited | York | 2012 |
| Moorwild Limited | Taunton | 2026 |
| Moorwood Livery Ltd | Sheffield | 2024 |
| Moralee Farms Limited | Crook | 2022 |
| Moray Christmas Trees Limited | Aberlour | 2011 |
| Moray Estates Properties Limited | Midlothian | 1923 |
| Mordor Gundogs Ltd | Perth | 2023 |
| More and Trim Limited | Datchet | 2013 |
| More Bees Please BEE Supplies Ltd | Rotherham | 2022 |
| More Forward Ltd | Fareham | 2009 |
| More Rural Consultancy Limited | Lincoln | 2007 |
| More Shellfish Limited | Elgin | 2007 |
| Moredon Game Supplies Limited | Taunton | 2001 |
| Moreni Rescue Dogs and T4T Transportation Ltd | Kendal | 2021 |
| Moresave Limited | Oakham | 1997 |
| Moreton Pound Farm Ltd | Bude | 2012 |
| Moreton Wood Farm Ltd | Whitchurch | 2017 |
| Morfa Pingett CYF. | Porth Tywyn | 2025 |
| Morgan & Jones Limited | Ceredigion | 2005 |
| Morgan Evans Business Services Limited | Kidderminster | 2010 |
| Morgan Thomas Bryncoed Ltd | Hengoed | 2023 |
| Morgan Thomas Farm Limited | Rhigos | 2011 |
| Morgan-Evans Equestrian Limited | Newmarket | 2013 |
| Morgans Poultry Ltd | Ludlow | 2019 |
| Morghew Park Estate Limited | Ashford | 2001 |
| Moringa International Group Ltd | Clacton-On-Sea | 2023 |
| Morlas Plants Ltd | St Asaph | 2014 |
| Morley Dairy Farming Company | Carlisle | 2022 |
| Morley Farming Limited | Melton Mowbray | 2012 |
| Morley Farms Limited | Wymondham | 2003 |
| Morley Nurseries Limited | Wymondham | 1964 |
| Morlogws Farm CYF | Newcastle Emlyn | 2011 |
| Mornhill Limited | Newport | 2025 |
| Morning Fresh Worldwide Limited | Wolverhampton | 2012 |
| Morning Star INS 87 Ltd | Buckie | 2017 |
| Morningside Estate Ltd | Poole | 2023 |
| Morningside Kennels Limited | Spalding | 2014 |
| Morningside Livery Stables Limited | Ashton-Under-Lyne | 2023 |
| Morningside Nurseries Ltd | Spalding | 2010 |
| Morov Ltd | Inverness | 2023 |
| Morreale Nursery Limited | Harlow | 2010 |
| Morrell Farming Ltd | Doncaster | 2024 |
| Morrells Farming Limited | Chipping Norton | 2001 |
| Morricebell Ltd | Fraserburgh | 2026 |
| Morris Brothers Contractors Limited | Coventry | 2014 |
| Morris Contractors Limited | Deerhurst | 1988 |
| Morris Duncan Marine Ltd | Newry | 2011 |
| Morris Farms Limited | Sawbridgeworth | 1947 |
| Morris' MOO Shoes Ltd | Chepstow | 2017 |
| Morris's of USK Limited | Monmouthshire | 2001 |
| Morrison and King Limited | Salisbury | 2006 |
| Morrison Fishing Ltd | Glasogw | 2006 |
| Morrow Agri Ltd | Bradford | 2025 |
| Morrow Farms Limited | Belfast | 2017 |
| Morspan Holdings Limited | Gwent | 1999 |
| Morspread Limited | Ludlow | 2005 |
| Morston Mussels Ltd | North Walsham | 2014 |
| Mortimer Farms Limited | Crediton | 2011 |
| Mortimers Farm Limited | Winchester | 1973 |
| Mortlock Brothers (Toppesfield) Limited | Halstead | 1973 |
| Morton FEN Farming Limited | Spalding | 2015 |
| Morton Fishing Ltd | Ballycastle | 2018 |
| Morton Grange Limited | Northallerton | 2009 |
| Morton Growers Limited | Oswestry | 2012 |
| Morton Hall Farms Limited | Fakenham | 1964 |
| Morton Hall Pigs Ltd | Norwich | 2022 |
| Morton's Traditional Taste Ltd | Norwich | 1998 |
| Mortons Fish | | 2008 |
| Morven Enterprises Ltd. | Peterhead | 2007 |
| Morvern Community Woodlands | Oban | 2004 |
| MOS Agri Ltd | Goole | 2025 |
| Moscar Farm Limited | Bakewell | 2012 |
| Mosford Livestock Ltd | London | 2026 |
| Mosley Contracting Limited | Huddersfield | 2019 |
| Moss & SON Ltd | Gloucester | 2005 |