| Montreaux Binfield Limited | Construction | 2022 |
| Montreaux Cape Limited | Construction | 2022 |
| Monument Homes Ltd | Real estate | 2025 |
| Mood and Nutrition Ltd | Wholesale & retail | 2025 |
| Mood Developments Limited | Real estate | 2005 |
| Mood Films Limited | Information & communication | 2024 |
| Moodlab Music Limited | Information & communication | 2023 |
| Moods Leeds Ltd | Hospitality | 2025 |
| Moodthesalon Ltd | Other services | 2026 |
| Moody Business Ltd | Professional & scientific | 2021 |
| Moody Consulting Ltd | Professional & scientific | 2023 |
| Moody Properties Ltd | Hospitality | 2019 |
| Moody's Homes Ltd | Real estate | 2021 |
| Moolmoor (Waverley) Limited | Real estate | 2017 |
| Moolmoor Holdings Limited | Real estate | 2016 |
| Moolmoor Investments Limited | Real estate | 2016 |
| Moolmoor Site Services Limited | Real estate | 2018 |
| Moon & Mountain Limited | Administrative & support | 2023 |
| Moon Interiors Ltd | Wholesale & retail | 2025 |
| Moon Materials Ltd | Wholesale & retail | 2020 |
| Moondogs Productions Ltd | Information & communication | 2025 |
| Mooney Gastroenterology Services Limited | Health & social care | 2020 |
| Moonik Limited | Wholesale & retail | 2022 |
| Moonlight Dwellings Limited | Real estate | 2025 |
| Moonlight Lounge Leeds Ltd | Other services | 2025 |
| Moonlight Promotions Ltd | Hospitality | 2015 |
| Moonlight Support Services Ltd | Health & social care | 2025 |
| Moonlit Studios Limited | Information & communication | 2022 |
| Moonrise Bar and Grill Limited | Hospitality | 2024 |
| Moonshot Limited | Wholesale & retail | 2017 |
| Moonstone Accounting Limited | Professional & scientific | 2026 |
| Moonstone FD Limited | Professional & scientific | 2017 |
| Moontrail Creative Ltd | Professional & scientific | 2025 |
| Moor Allerton Elderly Care | Health & social care | 2002 |
| Moor Allerton Golf Club (Leeds) | Arts & recreation | 2015 |
| Moor Allerton Golf Club Limited(The) | Arts & recreation | 1923 |
| Moor and Metro Property Partners Limited | Real estate | 2026 |
| Moor Choice Ltd | Construction | 2022 |
| Moor Cobbler Shoppe Ltd | Wholesale & retail | 2013 |
| Moor Grange Holdings Ltd | Administrative & support | 2024 |
| Moor Grange Residential Ltd | Construction | 2025 |
| Moor Lane Car Sales Ltd | Wholesale & retail | 2024 |
| Moor Lane Legacy Limited | Professional & scientific | 2021 |
| Moor Lane Motors Limited | Wholesale & retail | 2019 |
| Moor OR Less Ltd | Professional & scientific | 2026 |
| Moor.Furniture Limited | Manufacturing | 2022 |
| Moorbank Court Management Company Limited | Households | 1983 |
| Moorbank LEA Management Company Limited | Households | 2017 |
| Moorcroft (Leeds) Ltd | Construction | 2018 |
| Moorcroft Grange Ossett Management Company Limited | Households | 2002 |
| Moorcroft Strategic Consulting Limited | Professional & scientific | 2015 |
| Moore Advanced Sounds Ltd | Wholesale & retail | 2025 |
| Moore Building Contractors Ltd | Construction | 2023 |
| Moore Estates Limited | Extraterritorial | 1991 |
| Moore Guard Solutions Ltd | Administrative & support | 2023 |
| Moore Resourcing Limited | Administrative & support | 2011 |
| Moores International Limited | Professional & scientific | 1964 |
| Moores Joinery & Windows Ltd | Construction | 2026 |
| Moores Management & Finance Limited | Administrative & support | 1961 |
| Moorfield Garage Limited | Wholesale & retail | 2009 |
| Moorfield Investments Limited | Real estate | 2022 |
| Moorfield Property Developments Limited | Construction | 2008 |
| Moorgarth Euston Limited | Real estate | 2018 |
| Moorgarth Group Holdings Limited | Financial services | 2022 |
| Moorgarth Group Limited | Real estate | 2003 |
| Moorgarth Living Limited | Real estate | 2016 |
| Moorgarth Property Investments Limited | Real estate | 2008 |
| Moorgarth Retail Limited | Real estate | 2016 |
| Moorgate Properties Ltd | Real estate | 2019 |
| Moorhead Demolition Limited | Construction | 1998 |
| Moorhead Excavations Limited | Construction | 1986 |
| Mooring Investment Ltd | Real estate | 2025 |
| Moorland Close (Maintenance) Limited | Households | 1965 |
| Moorland Private School Limited | Education | 2008 |
| Moorland Properties Limited | Construction | 2018 |
| Moorland Property Services Leeds Limited | Real estate | 2018 |
| Moorland Ridge Management Company Limited | Households | 2000 |
| Moorlandra Properties Ltd | Real estate | 2026 |
| Moorlandra Stores Ltd | Wholesale & retail | 2010 |
| Moorlands Management Company Limited(The) | Households | 1982 |
| Moorside Court (Ilkley) Management Limited | Households | 1999 |
| Moorside Grange Management Company Limited | Households | 2001 |
| Moorside View Limited | Real estate | 2023 |
| Moortown Dropshipping Limited | Wholesale & retail | 2020 |
| Moortown DRY Cleaner Ltd | Other services | 2017 |
| Moortown Fencing & Landscaping Ltd | Construction | 2021 |
| Moortown FNC Ltd | Hospitality | 2024 |
| Moortown Golf Club,Limited(The) | Arts & recreation | 1909 |
| Moortown Holdings Ltd | Real estate | 2021 |
| Moortown Hospitality Limited | Hospitality | 2021 |
| Moortown Kitchens and Bedrooms Ltd | Manufacturing | 2020 |
| Moortown Laundrette Woodsley Ltd | Other services | 2025 |
| Moortown Laundry Ltd | Other services | 2025 |
| Moortown Painting & Decorating Services Limited | Construction | 2003 |
| Moortown Pizza Ltd | Hospitality | 2020 |
| Moortown Pressure Washing Services Limited | Administrative & support | 2023 |
| Moortown Properties Limited | Real estate | 2018 |
| Moortown Property Solutions Ltd | Real estate | 2026 |
| Moortown Rufc Ltd | Administrative & support | 2016 |
| Moosa Properties (Leeds) Limited | Real estate | 2021 |