| Manhattan Loft Trecwn Limited | | 2023 |
| Mannerton Properties Limited | | 2023 |
| Manor Holdings Limited | | 2022 |
| Mantova Limited | | 2023 |
| Maple Leaf Investments Limited | | 2023 |
| Maple Management Limited | | 2023 |
| Margate Properties Limited | | 2022 |
| Margeel Limited | | 2023 |
| Marjorie's Nest Limited | | 2023 |
| Mark 103 MST a (Guernsey) Limited | | 2019 |
| Mark Bermondsey (Guernsey) Limited | | 2019 |
| Mark Bermondsey (Guernsey) Limited | | 2022 |
| Mark QW (Guernsey) Limited | | 2020 |
| Mark QW (Guernsey) Limited | | 2022 |
| Markesta Investments Limited | | 2023 |
| Marlow Studios Limited | | 2023 |
| Marmaris Investments Limited | | 2022 |
| Marmora Limited | | 2023 |
| Marylebone Properties Limited | | 2023 |
| Maryview Limited | | 2025 |
| Maryview Limited | | 2023 |
| Matanna Capital Partners Limited | | 2019 |
| Mauve Properties Limited | | 2023 |
| Maven Topco Limited | | 2018 |
| Max-Flowers Limited | | 2023 |
| Maxios Limited | | 2023 |
| Maya Property Group Limited | | 2015 |
| Mayfair Property Developments Limited | | 2022 |
| Mbna Europe Finance Limited | | 2008 |
| Mcninch Property Holdings Limited | | 2023 |
| MDL Limited | | 2022 |
| Medicx Health (Eight) Limited | | 2022 |
| Medicx Health (Five) Ltd | | 2018 |
| Medicx Health (Four) Limited | | 2022 |
| Medicx Health (Hereford) Limited | | 2022 |
| Medicx Health (Holmes Chapel) Limited | | 2022 |
| Medicx Health (Nine) Limited | | 2022 |
| Medicx Health (Seven) Limited | | 2022 |
| Medicx Health (SIX) Limited | | 2022 |
| Medicx Health (TEN) Limited | | 2022 |
| Medicx Health (Thirty Five) Limited | | 2022 |
| Medicx Health (Thirty Four) Limited | | 2022 |
| Medicx Health (Thirty One) Limited | | 2023 |
| Medicx Health (Thirty Seven) Limited | | 2022 |
| Medicx Health (Thirty SIX) Limited | | 2022 |
| Medicx Health (Thirty Three) Limited | | 2022 |
| Medicx Health (Thirty) Limited | | 2022 |
| Medicx Health (Twenty Eight) Limited | | 2022 |
| Medicx Health (Twenty Five) Limited | | 2022 |
| Medicx Health (Twenty Four) Limited | | 2022 |
| Medicx Health (Twenty One) Limited | | 2022 |
| Medicx Health (Twenty Seven) Limited | | 2022 |
| Medicx Health (Twenty SIX) Limited | | 2022 |
| Medicx Health (Twenty Three) Limited | | 2022 |
| Medicx Health (Twenty Two) Limited | | 2022 |
| Meena Property Limited | | 2023 |
| Meif 6 N2 LP | | 2021 |
| MEP Founder Partner L.P. | | 2006 |
| Meraki Holdings Ltd | | 2023 |
| Merchant Equity Partners, L.P. | | 2006 |
| Merchant Holdings Limited | | 2023 |
| Merk (2016) Limited | | 2022 |
| Merricroft Holdings Limited | | 2023 |
| Merricroft Limited | | 2023 |
| Merton Investment Limited | | 2023 |
| Merton Park Holdings Limited | | 2023 |
| Mesa Holdings Ltd. | | 2023 |
| Mica Investments Limited | | 2025 |
| Micro Investments Limited | | 2022 |
| Midgard Holdings Limited | | 2022 |
| Midland Properties Limited | | 2022 |
| Midway Nominee Limited | | 2023 |
| Midway Topco Limited | | 2023 |
| Midway WH 2 GP Limited | | 2024 |
| Midway WH 2 Nominee Limited | | 2024 |
| Mile END Guernsey Opco Ltd. | | 2023 |
| Mile END Guernsey Propco Ltd. | | 2023 |
| Milestone Property Limited | | 2022 |
| Milky Way Limited | | 2023 |
| Mill Hill Centre Limited | | 2023 |
| Millbarge Holdings Limited | | 2022 |
| Millmerran Research and Manufacturing Associates Limited | | 2010 |
| Minerva Property Holding Limited | | 2023 |
| Mini Property Limited | | 2023 |
| Minini Guernsey Limited | | 1993 |
| Mint Properties Limited | | 2023 |
| Mismo Connections (Guernsey) Limited | | 2023 |
| Mistral Developments Limited | | 2023 |
| MK Real Estate Ltd. | | 2022 |
| MKS Pamp Group Limited | | 2021 |
| MKS Pamp Group Limited | | 2022 |
| Moat Limited | | 2023 |
| Mocksville Holdings Limited | | 2023 |
| Mohamed Property Company Limited | | 2022 |
| Mont Crevelt Properties Limited | | 2023 |
| Montague Hotel Properties Limited | | 2022 |
| Montague Investments Limited | | 2023 |
| Moore Stephens Trust Company (Guernsey) Limited | | 2022 |
| Moorgate I Limited | | 2022 |
| Moorgate II Limited | | 2022 |