| Moore Insulation Limited | Manufacturing | 1992 |
| Moore Property 4 U Ltd | Real estate | 2024 |
| Moore Software Ltd | Information & communication | 2026 |
| Moore Value Housings Ltd | Real estate | 2024 |
| Moorend Farm Woodford Ltd | Financial services | 2025 |
| Mooretech Ltd | Information & communication | 2026 |
| Mooreti Limited | Information & communication | 2006 |
| Moore’S Brickwork and Construction Limited | Construction | 2025 |
| Moorfield Newsagents Ltd | Wholesale & retail | 2026 |
| Moorfield Sports Club CIC | Education | 2024 |
| Moorgate Properties (NW) Limited | Construction | 2018 |
| Moorhead Construction Ltd | Construction | 2023 |
| Moorland Media & Design Limited | Information & communication | 2016 |
| Moors Civils Ltd | Construction | 2020 |
| Moors Property Services Ltd | Real estate | 2025 |
| Moose Consultancy & Training Limited | Education | 2021 |
| Moov Tech Limited | Information & communication | 2026 |
| Mooviq Limited | Information & communication | 2025 |
| Moozik Academy Ltd | Arts & recreation | 2019 |
| MOR HR Solutions Ltd | Administrative & support | 2025 |
| Moraa Consultancy Ltd | Professional & scientific | 2025 |
| Moraisconstructions Limited | Construction | 2025 |
| Moran Brothers Property Limited | Real estate | 2023 |
| Moran Engineering Ltd | Administrative & support | 2017 |
| Moran Property Ltd | Real estate | 2022 |
| Moran Recruitment Ltd | Administrative & support | 2026 |
| Moran Tiling Contractors Ltd | Construction | 2022 |
| Morana Flooring Ltd | Construction | 2025 |
| Morbridge International Limited | Transport & logistics | 1983 |
| Morcann Ventures Limited | Real estate | 2017 |
| More for Moore Ltd | Real estate | 2021 |
| More Love Yoga & Meditation Limited | Education | 2016 |
| More to Life Media Limited | Information & communication | 2020 |
| Morecrofts LLP | | 2007 |
| Morecrofts Trust Corporation Limited | Administrative & support | 2023 |
| Morethan Shelters Ltd | Manufacturing | 2023 |
| Morfic Ltd | Health & social care | 2024 |
| Morfield Heating & GAS Services Ltd | Construction | 2019 |
| Morgan Build (N.W) Ltd | Construction | 2020 |
| Morgan Building Developments Limited | Construction | 2025 |
| Morgan D J Limited | Wholesale & retail | 2026 |
| Morgan D Ltd | Real estate | 2020 |
| Morgan Johnson Assets Ltd | Real estate | 2024 |
| Morgan Jones Hair Ltd | Other services | 2018 |
| Morgan Ryder Associates Limited | Administrative & support | 2002 |
| Morgan Telesis Limited | Professional & scientific | 2013 |
| Morgan Transport U.K. Limited | Transport & logistics | 2003 |
| Morgans Estate Agents Limited | Real estate | 2017 |
| Moriarty Associates Limited | Administrative & support | 2003 |
| Moriarty Estates Ltd | Real estate | 2023 |
| Moriarty Financial Services Ltd | Financial services | 2018 |
| Moriarty Mortgages Ltd | Financial services | 2022 |
| Morinox Limited | Construction | 2012 |
| Morison Properties Limited | Real estate | 2012 |
| Morland Psychological Services Limited | Health & social care | 2013 |
| Morley & Morley Capital Ltd | Financial services | 2025 |
| Morley Commercial NW Limited | Professional & scientific | 2025 |
| Morley Road SPV Limited | Construction | 2021 |
| Mornington Terrace Limited | Financial services | 2014 |
| Mornpoint Limited | Construction | 1987 |
| Morock Ltd | Other services | 2025 |
| Morparts (U.K.) Limited | Wholesale & retail | 1995 |
| Morpheus Consultancy Management Ltd | Professional & scientific | 2020 |
| Morrells (North West) Limited | Hospitality | 2019 |
| Morricks Ltd | Real estate | 2023 |
| Morrieryan Ltd | Hospitality | 2025 |
| Morris Contract Furniture Limited | Manufacturing | 2014 |
| Morris Family Trustees Limited | Professional & scientific | 2025 |
| Morris HR Limited | Professional & scientific | 2019 |
| Morris Mercantile Limited | Wholesale & retail | 2015 |
| Morris Telecoms Ltd | Construction | 2018 |
| Morrison Green Contracting Ltd | Construction | 2025 |
| Morrisroe Trading Ltd | Wholesale & retail | 2024 |
| Morrissey & Jones Limited | Real estate | 2019 |
| Morrissey Consultancy Services Limited | Professional & scientific | 2024 |
| Morrissey Management Group Ltd | Arts & recreation | 2019 |
| Morrow's (Outfitters) Limited | Wholesale & retail | 2011 |
| Mors + Harte Architects Limited | Professional & scientific | 2018 |
| Morstar Limited | Construction | 2008 |
| Mortgage 456 Limited | Professional & scientific | 2024 |
| Mortgage BEE NW Limited | Financial services | 2018 |
| Mortgage Broker Club Limited | Information & communication | 2020 |
| Mortgage Broker UK (8) Ltd | Financial services | 2023 |
| Mortgage Miscalculation Centre Ltd | Administrative & support | 2020 |
| Mortgage Mortgage Mortgage Ltd | Financial services | 2026 |
| Mortgageis Limited | Financial services | 2020 |
| Mortgageneeds Holdings Limited | Financial services | 2026 |
| Mortgageneeds.Info Holdings Ltd | Financial services | 2026 |
| Morton Dixon Ltd | Professional & scientific | 2023 |
| Morton Sports Consultancy Ltd | Arts & recreation | 2023 |
| Mortonvine Ltd | Hospitality | 2024 |
| Morwell Joinery & Construction Ltd | Construction | 2018 |
| Morwell Roofing Ltd | Extraterritorial | 2018 |
| Moryn Consulting Ltd | Administrative & support | 2026 |
| MOS Food L1 Ltd | Hospitality | 2026 |
| Mosaic Children's Therapy Centre Ltd | Health & social care | 2012 |
| Mosaic Property Investment Limited | Real estate | 2020 |
| Moscow Management Limited | Real estate | 2017 |
| Moshe Properties Ltd | Real estate | 2020 |
| Mosissa Keneni Ltd | Transport & logistics | 2024 |