| Mami Takawafari Ltd | Extraterritorial | 2022 |
| Manecrisn N Sons Ltd | Wholesale & retail | 2025 |
| Maranatha Trade Consult & Services Ltd | Administrative & support | 2021 |
| Marcus Mallucci Limited | Other services | 2018 |
| Mary's Youth Club Ltd. | Real estate | 2008 |
| Maryon Park Homes Limited | Construction | 2020 |
| Mavrego Services Limited | Wholesale & retail | 2024 |
| MAX Publishing Limited | Information & communication | 1990 |
| Maygood Asphalt & Roofing Co. Limited | | 1986 |
| Medici Designs Limited | Wholesale & retail | 1988 |
| Medici Society,Limited(The) | Wholesale & retail | 1908 |
| Mental Health Consultancy UK Limited | Professional & scientific | 2010 |
| Mero Consulting Ltd | Professional & scientific | 2025 |
| Mildmay Community Nursery Limited | Education | 2010 |
| Misa Ethiopian Cuisine Ltd | Hospitality | 2024 |
| Mitchell & TYE Developments Limited | Real estate | 2014 |
| MIX Masters Events Limited | Hospitality | 2019 |
| Miyu YUI Takawafari Ltd | Extraterritorial | 2022 |
| MJU Care Ltd | Health & social care | 2019 |
| Modern Art Society (England) Limited(The) | Information & communication | 1917 |
| Molek Faith Care Ltd | Health & social care | 2016 |
| Monster Doner Kebab and Grill Ltd | Hospitality | 2024 |
| Music City School Ltd | Education | 2021 |
| Mutlu&Co Limited | Other services | 2018 |
| My Castle Enfield Limited | Construction | 2024 |
| Mystic Flight Limited | Real estate | 2026 |
| Nanapezee Limited | Health & social care | 2016 |
| Navigate Media Limited | Professional & scientific | 2005 |
| NAZ UK Homes Ltd | Construction | 2026 |
| Nikee's Beauty (Holding) Limited | Other services | 2022 |
| NK Medical Consulting Ltd | Health & social care | 2018 |
| Ocean Manor Associates Limited | Real estate | 2024 |
| Octal Alchemy Ltd | Information & communication | 2017 |
| Odyssey Construction and Maintenance HQZ Limited | Construction | 2024 |
| Omnia Technical Limited | Professional & scientific | 2020 |
| Omnom Group Limited | Hospitality | 2017 |
| ORA YUI Takawafari Ltd | Extraterritorial | 2022 |
| Oraxz Ltd | Wholesale & retail | 2021 |
| Origin X Consulting Limited | Information & communication | 2023 |
| Origin X Limited | Financial services | 2023 |
| Osiprian and Company Limited | Health & social care | 2013 |
| Ossau Vins & Spiritueux Ltd | Wholesale & retail | 2014 |
| Pampered Limited | Other services | 2012 |
| Paramount Radio Communications Limited | Wholesale & retail | 2010 |
| Parkerco Limited | Professional & scientific | 2019 |
| Parkside Nails Limited | Other services | 2020 |
| Paul Douglas Mcdaniels Junior Ltd | Extraterritorial | 2021 |
| Pepa's Healthy Bakery Ltd | Manufacturing | 2022 |
| PHASE3 Architecture and Design Limited | Professional & scientific | 2012 |
| Phoenix Reign Limited | Administrative & support | 2024 |
| Pimlico Roofing Limited | Construction | 2025 |
| Pixelperfectproductions Ltd | Administrative & support | 2016 |
| Plans Made Easy Ltd | Real estate | 2025 |
| Plartus Solutions Ltd | Information & communication | 2014 |
| Port.Ls Ltd | Professional & scientific | 2014 |
| Prayosha Store Ltd | Wholesale & retail | 2024 |
| Pro CAP Developments Ltd | Construction | 2023 |
| Protocom Properties Ltd | Real estate | 2017 |
| Q-Beyond Ltd | Information & communication | 2017 |
| QNS LLP | | 2011 |
| QNS1 LLP | | 2012 |
| Qualinet Solutions Ltd | Information & communication | 2003 |
| R E Johnson Design Consultants Ltd | Wholesale & retail | 2025 |
| RBR Law Limited | Professional & scientific | 2018 |
| Reach Systems Limited | Information & communication | 2022 |
| Renest Ltd | Construction | 2022 |
| REP Secure Ltd | Professional & scientific | 2025 |
| Revival Academy Ltd | Education | 2017 |
| Revival Skin Ltd | Education | 2024 |
| Ritchie Design Partners Ltd | Professional & scientific | 2022 |
| RMR Properties London Limited | Real estate | 2020 |
| Rookeswood Limited | Real estate | 2012 |
| Rovrox Holdings Limited | Financial services | 2018 |
| Rovrox Limited | Real estate | 2016 |
| Rtfp Holdings Limited | Financial services | 2020 |
| Résurrection Boutique Ltd | Wholesale & retail | 2017 |
| S D K Trading Ltd | Administrative & support | 2019 |
| Sagewise Wealth London Limited | Financial services | 2016 |
| Samtexh Software Solutions Limited | Information & communication | 2025 |
| Sankofa Spirits Ltd | Wholesale & retail | 2026 |
| Scully Enterprises Ltd | Financial services | 2020 |
| SDJ Trading Ltd | Information & communication | 2020 |
| Senitron Research & Development Ltd | Energy | 2012 |
| Shim Properties Ltd | Real estate | 2026 |
| Shop Must Have Goods Ltd | Wholesale & retail | 2024 |
| Shoreditch Building Services Limited | Construction | 2015 |
| Siaprofessionals.Com Limited | Administrative & support | 2025 |
| Sigma Systems ENG Limited | Construction | 2012 |
| Siliconspark Ltd | Information & communication | 2016 |
| Silver Oak Consulting Limited | Professional & scientific | 2025 |
| Skin Group (Services) Limited | Other services | 2017 |
| Skin Group (Training) Limited | Education | 2017 |
| Skin Group International Limited | Financial services | 2017 |
| Skin Group Limited | Education | 2019 |
| Sky Palace Records Limited | Information & communication | 2024 |
| Skylight Communications Limited | Professional & scientific | 2000 |
| Smith-Wykes Limited | Professional & scientific | 2011 |
| Space Plants Ltd | Manufacturing | 2023 |
| ST Cross Limited | Real estate | 2024 |
| State Credit & Investment Limited | Financial services | 1979 |