| Monea Limited | Stirling | 2019 |
| Monet Tree Care Limited | Milton Keynes | 2020 |
| Money Power Ltd | Stoke-On-Trent | 2021 |
| Moneyminds Investment Group Ltd | London | 2025 |
| Moneypeak Limited | Hereford | 2001 |
| Moneypenny Utilities Ltd | Cardiff | 2018 |
| Moneysharvan | Swatragh | 2016 |
| Mongewell Limited | Warwick | 1992 |
| Monica Tory Ltd | Blandford Forum | 2022 |
| Monikie Farms Limited | Forfar | 2013 |
| Monivea Bloodstock Limited | Richmond | 2014 |
| Monk Farms Ltd | Holywell | 2010 |
| Monk Lakes Fishery Limited | Canterbury | 2020 |
| Monk Transport Group Limited | Holywell | 2012 |
| Monkey Business Arboriculture Limited | Nottingham | 2012 |
| Monkeysaurus Ltd | Rugby | 2024 |
| Monks Hall Farms Limited | Spalding | 1961 |
| Monkwood Farming and Forestry Ltd | Chesterfield | 2016 |
| Monmouthshire Veterans Support Hub CIC | Abergavenny | 2025 |
| Monopoly Land Limited | Rochester | 2026 |
| Monstar Vibe Ltd | Hounslow | 2019 |
| Monstera Stan Ltd. | London | 2025 |
| Montague Farm Croyde Limited | Birmingham | 2021 |
| Montague Organic Gardens Limited | Wincanton | 1989 |
| Montalto Farms Limited | Ballymena | 2017 |
| Montauk Bloodstock Ltd | Petersfield | 2025 |
| Montcastle Bloodstock Limited | Newmarket | 2016 |
| Monte Altore Ltd | London | 2020 |
| Monte Angelo Limited | Birmingham | 2012 |
| Monteum Limited | Shoreham By Sea | 1973 |
| Montgomerie & SON Limited | Billericay | 2020 |
| Montgomerie Farms Limited | Newark | 1965 |
| Montgomery Consultancy Ltd | Llanelli | 2020 |
| Montgomery Farm Limited | Camberley | 1997 |
| Montgomery Land Limited | Kilmarnock | 2021 |
| Montgomery Poultry Ltd | Dungannon | 2015 |
| Montgomeryshire Truffles Limited | London | 2026 |
| Montilly Farms Ltd | Sion Mills | 2010 |
| Montrave Farm Limited | Stirling | 2022 |
| Montrose Smallholding Developments Ltd | Wimborne | 2024 |
| Montrose Trees Ltd | Billericay | 2014 |
| Monty-Pack Limited | Market Rasen | 2001 |
| Monument Apiaries Limited | Stirling | 2016 |
| Monument Farm (Rare Breeds & Stud) Limited | Tugby | 2013 |
| Monument House Vineyard Limited | Barnetby | 2023 |
| Monybuie Limited | Castle Douglas | 2020 |
| Monymusk Land Company Limited | Aberdeen | 1964 |
| Monyquil Farm Ltd | Glasgow | 2020 |
| MOO Haven Rescue | Nottingham | 2013 |
| MOO Management Ltd | Bolton | 2010 |
| MOO Milk Limited | Omagh | 2012 |
| MOO MOO Organic Dairy Farm Limited | London | 2013 |
| MOO2EWE Limited | Carlisle | 2017 |
| MOO2YOU Properties Ltd | Preston | 2011 |
| Moobility Limited | Canterbury | 2017 |
| Moodie Marine Limited | Peterhead | 1985 |
| Moody Sheep Limited | Oldham | 2012 |
| Moolenaar UK Ltd | Huntingdon | 2014 |
| Mooney Farms Ltd | Newry | 2020 |
| Moonicorns Ltd | Nottingham | 2021 |
| Moonlight Hollow Limited | Colchester | 2006 |
| Moonlight Ridge Stables Ltd | Farnham | 2015 |
| Moonsbrook Alpacas Limited | Hove | 2007 |
| Moonshadow Farm Ltd | Bicester | 2021 |
| Moonskov Limited | Lytham St Annes | 2008 |
| Moonyeen Ltd. | Buckie | 2006 |
| Moor & SON Limited | Berwick-Upon-Tweed | 2008 |
| Moor Barton Wilding CIC | Newton Abbot | 2022 |
| Moor Court Farms Limited | Winchester | 1997 |
| Moor END K9 Ltd | Saffronwalden | 2025 |
| Moor Farm (Minety) Ltd | Southport | 2016 |
| Moor Farms (Middleton) Limited | Leiston | 1963 |
| Moor Foliage Limited | Oxted | 2026 |
| Moor Hall Estates Ltd. | Preston, | 2013 |
| Moor Heat Limited | Liskeard | 2010 |
| Moor House Farming Limited | Brandesburton Driffield | 1990 |
| Moor Lane Market Garden CIC | Okehampton | 2026 |
| Moor Lodge Bloodstock Limited | Ely | 2024 |
| Moor Mike Ltd | Kendal | 2024 |
| Moor Organics Limited | Faversham | 2007 |
| Moor Park Farm Limited | Banbridge | 2023 |
| Moor Race Ltd | Kendal | 2024 |
| Moor Steve Ltd | Kendal | 2024 |
| Moor TAW Limited | Okehampton | 2023 |
| Moor Trees | South Brent | 1999 |
| Moor View Alpacas Ltd | Liskeard | 2023 |
| Moor View Farm Limited | Holsworthy | 2008 |
| MOOR2SEA Fencing Limited | Ivybridge | 2024 |
| Moorbrock Estate Limited | Aberdeen | 1990 |
| Moorcourt Fruit Limited | Kington | 2013 |
| Moore (Blyth) Limited | Worksop | 2012 |
| Moore Agri Limited | Enniskillen | 2021 |
| Moore Agronomy Limited | Tiverton | 2011 |
| Moore Bros. the Shaw Ltd | Morpeth | 2004 |
| Moore Energy Ltd | Omagh | 2011 |
| Moore Farming Limited | Cornhill-On-Tweed | 2009 |
| Moore Plants Limited | Warrington | 2014 |
| Moore Timber Ltd | Omagh | 2015 |
| Moore Trees Ltd | Cardiff | 2017 |
| Moore VEG Ltd | Bodmin | 2024 |