| Modern Properties Maintenance Limited | Construction | 2016 |
| Modern Roofs Limited | Construction | 1991 |
| Modern Rubber Roofing Ltd | Extraterritorial | 2012 |
| Modern Sushi and Bento Ltd | Hospitality | 2025 |
| Moderndwellingdecor Ltd | Wholesale & retail | 2025 |
| Moderneyehightechsolution Ltd | Wholesale & retail | 2024 |
| Modest Design Ltd | Wholesale & retail | 2026 |
| Modest Muse Ltd | Wholesale & retail | 2025 |
| Modest Rail Limited | Wholesale & retail | 2023 |
| Modestyle Ltd | Wholesale & retail | 2019 |
| Modha Ales Ltd | Manufacturing | 2014 |
| Modha Bathroom Renovations Ltd | Construction | 2024 |
| Modha Belgrave Ltd | Wholesale & retail | 2025 |
| Modha Biomedical Limited | Professional & scientific | 2014 |
| Modhvadia Enterprises Ltd | Wholesale & retail | 2025 |
| Modi & Co Ltd | Financial services | 2002 |
| Modi Associates UK Ltd | Professional & scientific | 2024 |
| Modi Logistics Limited | Transport & logistics | 2025 |
| Modimarket Ltd | Wholesale & retail | 2025 |
| Modom Ltd | Information & communication | 2018 |
| Modus Marketing Limited | Professional & scientific | 2026 |
| Modus People Ltd | Administrative & support | 2022 |
| Modvera London Limited | Wholesale & retail | 2026 |
| MOE Engineering Limited | Wholesale & retail | 2023 |
| MOF Gardens Ltd | Administrative & support | 2024 |
| MOF Lawns Ltd | Administrative & support | 2024 |
| Mofai Foods Ltd | Wholesale & retail | 2024 |
| Mofazz Limited | Wholesale & retail | 2020 |
| Moffatt Brothers Ltd | Construction | 2026 |
| Moffatt Maisons Ltd | Real estate | 2025 |
| Mog-Cad Precision Engineering Services Ltd | Professional & scientific | 2021 |
| Mogas Industries Limited | Manufacturing | 2007 |
| Moghul Express Catering Ltd | Hospitality | 2024 |
| Moghul Express Food Ltd | Hospitality | 2018 |
| Moghultech Ltd | Information & communication | 2025 |
| Mogra Faith & Culture Consultancy Ltd | Education | 2017 |
| Mogra Ltd | Professional & scientific | 2017 |
| Mografik Limited | Arts & recreation | 2014 |
| Mohamad Amjad Boubes Ltd | Health & social care | 2025 |
| Mohamed Bouzekri Ltd | Other services | 2024 |
| Mohamed Mohamed TM Ltd | Construction | 2025 |
| Mohammad Khan Ltd | Real estate | 2022 |
| Mohammada Ltd | Financial services | 2025 |
| Mohammed Faisal Shahid Ltd | Health & social care | 2021 |
| Mohammed Mapesa Transport Ltd | Transport & logistics | 2019 |
| Mohammed Nadim Landlord Limited | Real estate | 2025 |
| Mohammed Plumbing Service Ltd | Construction | 2025 |
| Mohammed Shoaib General Contracting Ltd | Construction | 2025 |
| Mohammed Solution Limited | Wholesale & retail | 2025 |
| Mohammeds Meats Ltd | Wholesale & retail | 2023 |
| Mohan Capital Ltd | Financial services | 2025 |
| Mohmalik Ltd | Wholesale & retail | 2022 |
| Mohp Ltd | Real estate | 2026 |
| Mohsin Global Ltd | Wholesale & retail | 2025 |
| Moio Venchas Ltd | Wholesale & retail | 2026 |
| Moir Associates Ltd | Manufacturing | 2019 |
| Moira Page Limited | Professional & scientific | 2013 |
| Mojirayo Ltd | Agriculture & fishing | 2023 |
| Mojo Living Limited | Real estate | 2025 |
| Mojo Merchandise Ltd | Financial services | 2024 |
| Mojo Promotions Holdings Ltd | Financial services | 2023 |
| Mojo Promotions Ltd | Professional & scientific | 2010 |
| Mojos Chicken and Pizza Limited | Hospitality | 2024 |
| Mojos Chicken Ltd | Hospitality | 2026 |
| Mokhanhamid Limited | Hospitality | 2025 |
| Moksha Krisha Events T/A MK Events Ltd | Hospitality | 2023 |
| Mokshaplus Ltd | Wholesale & retail | 2026 |
| Moland Consults Limited | Administrative & support | 2023 |
| Moldbees Ltd | Hospitality | 2022 |
| Mole Recruitment Ltd | Administrative & support | 2019 |
| Molek Cleaning Services Limited | Administrative & support | 2025 |
| Molek Healthcare Limited | Health & social care | 2026 |
| Molila Limited | Information & communication | 2019 |
| Molliemae Ltd | Professional & scientific | 2020 |
| Moltz Ltd | Information & communication | 2025 |
| Molvo Ltd | Construction | 2025 |
| Moma Media Limited | Professional & scientific | 2026 |
| Momentum Advisers Limited | Real estate | 2009 |
| Momentum Agency (Leicester) Ltd | Administrative & support | 2023 |
| Momentum Assets Limited | Real estate | 2022 |
| Momentum Broker Solutions Ltd | Financial services | 2010 |
| Momentum Car Group Limited | Wholesale & retail | 2025 |
| Momentum Care (Leicester SLS) Limited | Health & social care | 2021 |
| Momentum Care Group Limited | Professional & scientific | 2021 |
| Momentum Equity Partners Limited | Financial services | 2025 |
| Momentum Healthcare Group Limited | Professional & scientific | 2025 |
| Momentum Housing Ltd | Real estate | 2018 |
| Momentum Pathways Limited | Health & social care | 2025 |
| Momentum+ Ltd | Wholesale & retail | 2024 |
| Momika Limited | Wholesale & retail | 2018 |
| Momot Ltd | Professional & scientific | 2015 |
| Momson Property Trading Ltd | Administrative & support | 2018 |
| Mona Farah Limited | Health & social care | 2025 |
| Mona Health Ltd | Health & social care | 2024 |
| Monal Leicester Limited | Financial services | 2020 |
| Monarch Knitting Machinery (U.K.) Limited | Manufacturing | 1968 |
| Monarch Monitoring Systems Limited | Extraterritorial | 2019 |
| Monarck Ltd | Professional & scientific | 2024 |
| Monart Limited | Professional & scientific | 1983 |
| Monbeaux Ltd | Wholesale & retail | 2020 |