| Momo-Joy Limited | Wholesale & retail | 2025 |
| Momos Lime Street Ltd | Hospitality | 2024 |
| Momtreprenuer Ltd | Wholesale & retail | 2025 |
| Momu Properties Ltd | Real estate | 2022 |
| Mona Hairdressing Ltd | Other services | 2026 |
| Monaghan Corporation Limited | Wholesale & retail | 2020 |
| Monaland Limited | Real estate | 1998 |
| Monalith Investments Ltd | Real estate | 2026 |
| Monalith Ltd | Professional & scientific | 2026 |
| Monara Services Limited | Manufacturing | 2007 |
| Monarch Tiling Co Ltd | Construction | 2025 |
| Monarch Vapor Ltd | Wholesale & retail | 2024 |
| Mond NW Ltd | Professional & scientific | 2026 |
| Monday Financial Group Limited | Financial services | 2025 |
| Mondeko Group UK Limited | Construction | 2017 |
| Mondo Recruitment Ltd | Extraterritorial | 2024 |
| Monefi Limited | Professional & scientific | 2020 |
| Moneglia Consultants Ltd | Professional & scientific | 2023 |
| Moner Rice Management Ltd | Hospitality | 2025 |
| Monetta LLP | | 2008 |
| Money Claim Collections Group Limited | Administrative & support | 2024 |
| Money PAY Limited | Information & communication | 2020 |
| Moneyspider Limited | Information & communication | 2024 |
| Moneytree Properties Limited | Real estate | 2006 |
| Monfa Limited | Professional & scientific | 2019 |
| Mongkokcatering Ltd | Hospitality | 2022 |
| Monic Beauty Ltd | Wholesale & retail | 2023 |
| Monileo Constructions Ltd | Construction | 2024 |
| Monk Isidore Spirits Ltd | Manufacturing | 2019 |
| Monk Properties NW Limited | Real estate | 2022 |
| Monkey and Peanut Properties Ltd | Real estate | 2024 |
| Monkeyboard Coffee Ltd | Wholesale & retail | 2020 |
| Monkhill Estates Limited | Construction | 2024 |
| Monkswood Properties Ltd | Real estate | 2004 |
| Monkton Nursery School Holdings Limited | Financial services | 2023 |
| Monkton Nursery School Limited | Education | 2015 |
| Monkton Nursery School Two Limited | Education | 2023 |
| Monntelina Holdings Ltd | Real estate | 2024 |
| Mono Mondo Ltd | Manufacturing | 2022 |
| Mono Roofing (North West) Ltd | Construction | 2022 |
| Monomori Trade Limited | Wholesale & retail | 2025 |
| Monopol Holdings Limited | Real estate | 1988 |
| Monroe Entertainments Ltd | Hospitality | 2018 |
| Montage and Memorabilia Ltd | Wholesale & retail | 2025 |
| Montage Property Ltd | Real estate | 2020 |
| Montague Marketing Limited | Professional & scientific | 2010 |
| Montana Property Ltd | Real estate | 2026 |
| Montanna Fitness Limited | Other services | 2007 |
| Montebello Boutique Ltd | Other services | 2015 |
| Montebello Training Ltd | Education | 2015 |
| Montecatini Limited | Wholesale & retail | 2025 |
| Monterina Limited | Information & communication | 2015 |
| Monterosa Productions Limited | Information & communication | 2003 |
| Montfrd Ltd | Wholesale & retail | 2024 |
| Montgomery Domestics Ltd | Manufacturing | 2011 |
| Montgomery Fire Compliance Ltd | Professional & scientific | 2026 |
| Montgomery Glenn Limited | Real estate | 2026 |
| Monthe & SON Limited | Health & social care | 2024 |
| Montirex Ltd. | Wholesale & retail | 2019 |
| Montreaux Designs Ltd | Administrative & support | 2017 |
| Monty Properties Limited | Other services | 1998 |
| Monty's Cafe Limited | Hospitality | 2025 |
| Montys Bedding Ltd | Wholesale & retail | 2021 |
| Montys Bespoke Flooring Ltd | Administrative & support | 2018 |
| Monument Square Limited | Real estate | 2015 |
| Monument Students Ltd | Real estate | 2022 |
| Monvyxpleni Limited | Professional & scientific | 2026 |
| Monza Car Solutions Ltd | Wholesale & retail | 2006 |
| Monza Fashion Ltd | Wholesale & retail | 2019 |
| MOO Co. (UK) Limited | Professional & scientific | 2012 |
| MOO MII Corporation Limited | Wholesale & retail | 2022 |
| Mooch Lifestyle Ltd | Wholesale & retail | 2012 |
| Moola Global Limited | Administrative & support | 2025 |
| Moomooland Limited | Arts & recreation | 2026 |
| Moon and Stars Mindfulness Ltd | Education | 2024 |
| Moon Child Care Services Ltd | Health & social care | 2025 |
| Moon Children's Care Ltd | Health & social care | 2021 |
| Moon Midget Limited | Arts & recreation | 2013 |
| Moonchild Sanelly Limited | Arts & recreation | 2022 |
| Mooncup Theatre Ltd | Arts & recreation | 2021 |
| Moonglades Poetry | Arts & recreation | 2025 |
| Moonglass Ltd | Wholesale & retail | 2021 |
| MOONHEAD123 Ltd | Wholesale & retail | 2025 |
| Moonia Limited | Hospitality | 2024 |
| Moonkey Business Ltd | Real estate | 2020 |
| Moonlight Cards Ltd | Manufacturing | 2023 |
| Moonshines Nails & Beauty (Liverpool) Ltd | Other services | 2024 |
| Moor Farm Residents Management Company Limited | Households | 2021 |
| Moor House Management Company Limited | Households | 1988 |
| Moor Park Motor Homes Ltd | Administrative & support | 2023 |
| Moor Park Properties Ltd | Real estate | 2020 |
| Moor Street Investments Limited | Real estate | 2016 |
| MOOR2PROPERTIES Limited | Construction | 2023 |
| Moore Baby Sleep Ltd | Information & communication | 2022 |
| Moore Brothers Property Limited | Real estate | 2024 |
| Moore Building Services (NW) Limited | Construction | 2025 |
| Moore Courier Solutions Limited | Transport & logistics | 2019 |
| Moore Creations Ltd | Construction | 2017 |
| Moore Developments Liverpool Ltd | Real estate | 2023 |
| Moore Games Ltd | Information & communication | 2025 |