| Marz Investments Limited | | 2023 |
| Mastelle (Zinc House) Limited | | 2022 |
| Master Industries 2006 Limited | | 2023 |
| Master Reitco Limited | | 2024 |
| Mastiff Bidco Limited | | 2021 |
| Mastiff Holdco Limited | | 2021 |
| Mastiff Midco Limited | | 2021 |
| Maufant Holdings Limited | | 2023 |
| Maures Property Limited | | 2023 |
| Mawkin Holdings Limited | | 2022 |
| Maxis Business Park Limited | | 2022 |
| Maya Trading Limited | | 2023 |
| Mayer (Greyfriars House) Ltd | | 2023 |
| Mayfair Investments Limited | | 2023 |
| Mazarona Properties (Portsmouth) Limited | | 2023 |
| MBBIUK001 Holdco Limited | | 2025 |
| Mbna Receivables Limited | | 2008 |
| MCB Eider Holdings Limited | | 2025 |
| Mckenna Estates Limited | | 2022 |
| Mckenna Properties Limited | | 2022 |
| Mckenna Rentals Limited | | 2022 |
| Mckenna Securities Limited | | 2022 |
| ME Marriage Settlement Trust Limited | | 2023 |
| Meadow Victoria Limited | | 2022 |
| Meantime Trustee 1 Limited | | 2022 |
| Meantime Trustee 2 Limited | | 2022 |
| Mecabury Properties Limited | | 2023 |
| Medical Antiques Limited | | 2023 |
| Medlee Investments Limited | | 2023 |
| Melas Limited | | 2023 |
| Meliae Property Limited | | 2023 |
| Melindi Limited | | 2023 |
| Melisanthe Limited | | 2023 |
| Melton Properties Limited | | 2023 |
| Merchant Square Holdings Limited | | 2017 |
| Mercury a Capital Limited | | 2015 |
| Mercury ABC Capital Limited | | 2015 |
| Mercury B Capital Limited | | 2015 |
| Mercury EDI Bicco Limited | | 2022 |
| Mercury New Holdco Limited | | 2023 |
| Mercury PFS Newco 1 Limited | | 2023 |
| Merian Global Investors (Finance) Limited | | 2017 |
| Merian Global Investors (Jersey) Limited | | 2017 |
| Merian Global Investors Limited | | 2017 |
| Meridian (Two) Property Holdings Limited | | 2022 |
| Merlin Mystique Limited | | 2023 |
| Meroni PTC Limited | | 2026 |
| Merrion Gardens Limited | | 2023 |
| Merrybond Properties Limited | | 2022 |
| Merseyside (PTC) Limited | | 2023 |
| Merton Properties Limited | | 2022 |
| Metcom Limited | | 2022 |
| Metro Jersey Co 2 Limited | | 2023 |
| Metro Jersey Co 3 Limited | | 2023 |
| Metro Jersey Co 4 Limited | | 2023 |
| Metro Jersey Co 5 Limited | | 2024 |
| Metro Shared Office Space Limited | | 2023 |
| Metrocentre Fedco (Jersey) Limited | | 2022 |
| Metropolitan AP4 Propco 1 Limited | | 2024 |
| Metropolitan AP4 Propco 2 Limited | | 2024 |
| Metropolitan AP4 Propco 3 Limited | | 2024 |
| Metropolitan AP4 Propco 5 Limited | | 2024 |
| Metropolitan AP5 Propco 1 Limited | | 2024 |
| Metropolitan AP5 Propco 2 Limited | | 2024 |
| Metropolitan AP6 Propco 1 Limited | | 2026 |
| Metropolitan AP6 Propco 2 Limited | | 2026 |
| MG Warwick Street Propco Limited | | 2022 |
| Mgref 2 ALI Gym Holdings Limited | | 2019 |
| Michaelangelo 69 Limited | | 2023 |
| Midas Limited | | 2023 |
| Midco Holdings Limited | | 2023 |
| Midocean (Europe) 2000-A LP | | 2000 |
| Midocean (Europe) 2000-B LP | | 2000 |
| Midocean (Europe) 2003 LP | | 2003 |
| MIF I Managing Trustee NO.1 Limited | | 2023 |
| MIF I Managing Trustee NO.2 Limited | | 2023 |
| Migdal Greenridge Tanfield Propco Limited | | 2023 |
| Miles Gray Road Limited | | 2025 |
| Mileway UK Management Ltd | | 2022 |
| Mili Jersey Trustee 1 Limited | | 2023 |
| Mili Jersey Trustee 2 Limited | | 2023 |
| Milieu Investments Limited | | 2023 |
| Millbrook Holdings Limited | | 2023 |
| Millharbour ACQ Limited | | 2022 |
| Millharbour Trustee 1 Limited | | 2022 |
| Millharbour Trustee 2 Limited | | 2022 |
| Milton Keynes 1 Propco Limited | | 2026 |
| Milton Park Holdings Limited | | 2007 |
| Milton Park Holdings Limited | | 2023 |
| Milton Properties Limited | | 2023 |
| Mimulus Limited | | 2023 |
| Minim Investments Limited | | 2023 |
| Minoan M Limited | | 2023 |
| Minorco Overseas Holdings Limited | | 2016 |
| Minorco Peru Holdings Limited | | 2016 |
| Minpress Investments Limited | | 2016 |
| Minshull Investments Holdings Limited | | 2022 |
| Mint Office Properties Limited | | 2023 |
| Mintle Limited | | 2023 |
| MIR Developments Limited | | 2023 |