| Mozii Ltd | Wholesale & retail | 2024 |
| MP Approved Limited | Professional & scientific | 2015 |
| MP Associates Limited | Other services | 2011 |
| MP Bond Street Ltd | Real estate | 2023 |
| MP Built Services Ltd | Real estate | 2024 |
| MP Commercial Shop Fitters Limited | Construction | 2024 |
| MP Consulting Services Limited | Professional & scientific | 2020 |
| MP Design Limited | Other services | 2015 |
| MP Electronics Limited | Administrative & support | 2023 |
| MP Financial Solutions Ltd | Professional & scientific | 2016 |
| MP Interior Renovations Ltd | Construction | 2026 |
| MP Logistics Ltd | Transport & logistics | 2025 |
| MP Structural Works Ltd | Construction | 2025 |
| MP Structures & Developments Ltd | Construction | 2025 |
| MP01 Limited | Real estate | 2022 |
| MP02 Limited | Real estate | 2022 |
| MP11 Ltd | Hospitality | 2025 |
| Mpak Limited | Health & social care | 2017 |
| MPF Property Improvements Limited | Construction | 2026 |
| MPH Plumbing & Heating Solutions Limited | Construction | 2020 |
| MPJ Clean and Care Limited | Administrative & support | 2026 |
| MPJ Medical Ltd | Health & social care | 2021 |
| MPJ Solutions Group Limited | Construction | 2018 |
| MPK Films Ltd | Information & communication | 2020 |
| MPL Waste Management Ltd | Water & waste | 2006 |
| MPM United Limited | Real estate | 2020 |
| Mpmuk Ltd | Health & social care | 2021 |
| MPR Properties Limited | Real estate | 2015 |
| MPS Couriers Limited | Transport & logistics | 2025 |
| MPS Developers Limited | Construction | 2025 |
| MPS Joinery Ltd | Construction | 2011 |
| MPS Nexus Ltd | Professional & scientific | 2018 |
| MR Auto Care Centre Ltd | Wholesale & retail | 2018 |
| MR BEAN2CUP Webshop Ltd | Wholesale & retail | 2013 |
| MR Boba Tea Harrow Ltd | Hospitality | 2022 |
| MR Carmax Limited | Wholesale & retail | 2012 |
| MR Chilli (London) Ltd | Hospitality | 2014 |
| MR Floor Sander Ltd | Construction | 2014 |
| MR Funky Limited | Hospitality | 2025 |
| MR Harith Akram Frcs (Neuro.Surg) Ltd | Health & social care | 2021 |
| MR Kinder Ltd | Arts & recreation | 2018 |
| MR Procurement and Sustainability Consulting Private Limited | Professional & scientific | 2024 |
| MR Roda Limited | Financial services | 2013 |
| MR Shakes Milkshake Bar Limited | Hospitality | 2010 |
| MR. Liftings Limited | Construction | 2024 |
| MR. Plant Hire Limited | Administrative & support | 1982 |
| MR. Shine END of Tenancy Cleaning Ltd | Administrative & support | 2025 |
| MR4D Construction Ltd | Construction | 2019 |
| Mrdx Limited | Wholesale & retail | 2024 |
| Mridula Productions Limited | Information & communication | 2018 |
| MRJ UK Property Ltd | Real estate | 2019 |
| MRK Rentals Ltd | Wholesale & retail | 2023 |
| MRL Management & Consultancy Ltd | Professional & scientific | 2026 |
| MRM Marine Ltd | Transport & logistics | 2021 |
| MRM Willwriters Limited | Professional & scientific | 2015 |
| MRP Solutions Limited | Financial services | 2001 |
| MRS Fortune Ltd | Professional & scientific | 2022 |
| MRT Financial Ltd | Real estate | 2019 |
| Mrvv Services Ltd | Wholesale & retail | 2025 |
| Mryj Ltd | Health & social care | 2020 |
| MS Accounting Limited | Health & social care | 2015 |
| MS Audiology Consultancy Ltd | Health & social care | 2016 |
| MS Britserve Limited | Wholesale & retail | 2025 |
| MS Carpets & Interior Ltd | Construction | 2020 |
| MS Computer Services Ltd | Information & communication | 2015 |
| MS Construction Builders Ltd | Construction | 2026 |
| MS Electricity Services Ltd | Construction | 2025 |
| MS Production House Ltd | Information & communication | 2022 |
| MS Properties Partnership LLP | | 2023 |
| MS Property Rental Limited | Real estate | 2020 |
| MS Rental Properties Ltd | Households | 2024 |
| MS System Limited | Information & communication | 2015 |
| MS Transport Ltd | Transport & logistics | 2019 |
| MSC Maintenance Limited | Other services | 2012 |
| MSC Solicitors and Notaries Limited | Professional & scientific | 2014 |
| Mscourierandshipping Limited | Transport & logistics | 2024 |
| Mselect Limited | Administrative & support | 2015 |
| MSG Estates Limited | Real estate | 2018 |
| MSG Products Ltd | Wholesale & retail | 2024 |
| MSH Services Limited | Transport & logistics | 2024 |
| Mshnuih Limited | Hospitality | 2023 |
| MSJ Ventures Ltd | Real estate | 2017 |
| MSK Clinic Limited | Health & social care | 2025 |
| MSK Food & Wine Ltd | Wholesale & retail | 2016 |
| MSK House Ltd | Real estate | 2015 |
| MSK Inn Limited | Hospitality | 2022 |
| MSK Residence Inn Limited | Hospitality | 2021 |
| MSK Soft Tissue Limited | Health & social care | 2021 |
| MSK Technology Ltd | Information & communication | 2022 |
| MSK Traders Ltd | Wholesale & retail | 2026 |
| MSL Trading Corporation Ltd | Professional & scientific | 1999 |
| MSL2 Limited | Extraterritorial | 2016 |
| MSM Properties London Limited | Wholesale & retail | 2021 |
| Msmb Issyoga Centre London Ltd | Administrative & support | 2017 |
| MSN Prime Ltd | Wholesale & retail | 2023 |
| Msomas Services Limited | Health & social care | 2024 |
| MSP (UK) Limited | Wholesale & retail | 1998 |
| MSP Property Investment Limited | Real estate | 2019 |
| Msparmar Entity LLP | | 2023 |
| Mspc Construction Ltd | Construction | 2022 |