| Lions DEN Group Ltd | Education | 2012 |
| Little Bells Pre-School and Nursery Ltd | Education | 2022 |
| Little Boots Studios Limited | Professional & scientific | 2023 |
| Little Tavern Group Ltd | Hospitality | 2019 |
| Litz Engineering Limited | Manufacturing | 2022 |
| Live to Learn Education Limited | Education | 2022 |
| Live to Learn Integrated Assessments Limited | Education | 2025 |
| Lobster INK Limited | Real estate | 2017 |
| Lockhart Developments Limited | Real estate | 2013 |
| Lockitstorage Ltd | Professional & scientific | 2017 |
| Long Field Associates Ltd | Real estate | 2020 |
| Longmeadow (Management) Limited | Households | 1989 |
| Looks Optical Ltd | Health & social care | 2010 |
| Loud Cloud Limited | Information & communication | 2009 |
| Louda Property Limited | Financial services | 2025 |
| Lower EXE Mooring Administration Limited | Administrative & support | 2014 |
| LR Health and Wealth Ltd | Health & social care | 2023 |
| LS7SPORTSCARDS Ltd | Wholesale & retail | 2025 |
| LTG Productions Ltd | Information & communication | 2022 |
| Luckhurst Property Ltd | Real estate | 2026 |
| Ludachris Trading Ltd | Wholesale & retail | 2022 |
| Luke & Eugene Carpentry Limited | Construction | 2018 |
| Lupey Limited | Arts & recreation | 2025 |
| Lympstone Manor Ltd | Hospitality | 2014 |
| M Cockman Plumbing and Heating Limited | Construction | 2015 |
| M J Lynch Agriculture Limited | Agriculture & fishing | 2015 |
| M. Hobbs (APB) Ltd | Construction | 2026 |
| MAC 1 Cleaning Service Ltd | Administrative & support | 2024 |
| Madeira Court (Exmouth) Limited | Households | 2003 |
| Maer Barns Exmouth Ltd | Construction | 2021 |
| Maer Barns Ltd | Construction | 2019 |
| Maer Barns Management Company Limited | Households | 2023 |
| Maer Bay Freeholds (Exmouth) Limited | Households | 1991 |
| Maintenance Management Solutions Ltd | Professional & scientific | 2022 |
| Mamhead Business Units Management Company Limited | Households | 2003 |
| Mandens BTA Limited | Real estate | 2025 |
| Manor Holdings EX8 Ltd | Administrative & support | 2016 |
| Maranatha Church Exeter | Other services | 2011 |
| Mariners NV Ltd | Hospitality | 2022 |
| Mark Timms Architects Limited | Professional & scientific | 2024 |
| Marley Mayer Hair Limited | Other services | 2022 |
| Marooned Ltd | Information & communication | 2024 |
| Marsh & Bloom Limited | Professional & scientific | 2019 |
| Marytrapnell Limited | Real estate | 2023 |
| Masey Road Residents Company Limited | Households | 2001 |
| Masons Marine Ltd | Wholesale & retail | 2021 |
| MB Tower Ltd | Transport & logistics | 2020 |
| Mbsj Limited | Other services | 2002 |
| MDG Carpentry Limited | Manufacturing | 2010 |
| MDV Medical Limited | Health & social care | 2015 |
| Meadows (Exmouth) Limited | Real estate | 2001 |
| Merch:Co Ltd | Wholesale & retail | 2025 |
| Merlin Business Park Management Limited | Administrative & support | 1989 |
| Merrist Court Management Company Limited | Real estate | 2018 |
| Messom Investments Ltd | Construction | 2025 |
| MET LET Ltd | Real estate | 2024 |
| MFC Fibre Ltd | Manufacturing | 2025 |
| MFL 92 Limited | Information & communication | 2021 |
| MGB Media Ltd. | Arts & recreation | 2024 |
| Michael Caines Consultancy Ltd | Professional & scientific | 2024 |
| Michael Caines Limited | Administrative & support | 2003 |
| Michelmore Property Limited | Real estate | 2020 |
| Mighty Oak Carpentry Limited | Manufacturing | 2010 |
| Mike Lima Limited | Professional & scientific | 2025 |
| Millbay Marina Village Management Company Limited | Households | 1988 |
| Mills Stores Ltd | Wholesale & retail | 2016 |
| Millysmobilebeauty Ltd | Other services | 2025 |
| Minbod Ltd | Real estate | 2025 |
| Minear Engineering Holding Limited | Administrative & support | 2008 |
| Minz Investments Limited | Real estate | 2020 |
| MJJ Investments Ltd | Transport & logistics | 2013 |
| MM Construction Solutions (South West) Limited | Construction | 2014 |
| MM Property Solutions (South West) Limited | Real estate | 2017 |
| Mole END Limited | Information & communication | 1997 |
| Molly-Susie Ventures, Ltd. | Real estate | 2013 |
| Monkhurst Ltd | Administrative & support | 2017 |
| Monky Limited | Information & communication | 2026 |
| Monterey Exmouth Limited | Households | 2006 |
| Montpellier Court (Exmouth) Limited | Administrative & support | 1998 |
| Moonhill Copse (Pinhoe) Management Company Limited | Real estate | 2016 |
| Moore's Pasties Ltd | Manufacturing | 2025 |
| More Retreats Ltd | Hospitality | 2026 |
| Morland Ltd | Administrative & support | 2002 |
| Mortgages Unmasked Ltd | Financial services | 2026 |
| Morton Land Exmouth Ltd | Professional & scientific | 2026 |
| Motor Finish Ltd | Wholesale & retail | 2024 |
| Mountlands Language School Limited | Education | 2010 |
| MOY Property Holdings Limited | Real estate | 2019 |
| MPS Glass and Window Centre Limited | Manufacturing | 2001 |
| MR & MRS Painting & Decorating Ltd | Construction | 2022 |
| MR Riley Ltd | Real estate | 2022 |
| MR X (Exmouth) Ltd | Other services | 2025 |
| Msnd Film Limited | Arts & recreation | 2021 |
| Murder of Crows Tattoo Studio Limited | Other services | 2016 |
| My Family Circle Ltd | Administrative & support | 2020 |
| Mylo Ltd | Real estate | 2020 |
| N H H Holdings Ltd | Administrative & support | 2013 |
| N&D Car Wash Ltd | Wholesale & retail | 2023 |
| Nabem Limited | Health & social care | 2017 |
| Nails on the EXE Ltd. | Other services | 2022 |