| Madison Property Company Limited | Real estate | 2006 |
| MAE Construction Limited | Construction | 2019 |
| Magnetized Ltd | Real estate | 2022 |
| Mainland Taxi Limited | Transport & logistics | 2003 |
| Manor Court (Galmpton) Management Company Limited | Households | 1992 |
| Marina View Brixham Limited | Hospitality | 2026 |
| Marine Survey Solutions and Consultants Ltd | Manufacturing | 2025 |
| Marzico Ltd | Real estate | 2019 |
| Matthew Porter Coaching Limited | Professional & scientific | 2020 |
| Mattr Deskware Ltd | Manufacturing | 2025 |
| MAX Moda Limited | Other services | 2009 |
| Maximum Training Ltd | Arts & recreation | 2018 |
| MAY Contain Mutts Limited | Arts & recreation | 2012 |
| Mayflower Court (Brixham) Limited | Households | 1979 |
| Mayford Hospitality Ltd | Hospitality | 2025 |
| Maypool Estates Limited | Professional & scientific | 2013 |
| Mcleod Trawlers Limited | Agriculture & fishing | 1997 |
| Meadhay Investments Ltd | Real estate | 2018 |
| Medicann Limited | Health & social care | 2021 |
| Meet Devon South West England Ltd | Professional & scientific | 2021 |
| Metherall Avenue Management Company Limited | Professional & scientific | 2001 |
| Mewstone Construction Ltd | Construction | 2023 |
| Migcas Ltd | Construction | 2023 |
| Mindfulness in Motion Limited | Health & social care | 2013 |
| Ming Garden Brixham Limited | Hospitality | 2024 |
| MKC Construction Limited | Construction | 2017 |
| MO Create Ltd | Professional & scientific | 2016 |
| Model Health Ltd | Professional & scientific | 2023 |
| Moon Island Ltd | Administrative & support | 2020 |
| Morecontent Ltd | Wholesale & retail | 2025 |
| Morgan Stratton Limited | Professional & scientific | 2025 |
| Morningtime Limited | Households | 1993 |
| Mortgage Cube Ltd | Financial services | 2018 |
| Moto Trading Limited | Wholesale & retail | 2018 |
| MTA Chartered Architects Ltd | Professional & scientific | 2014 |
| MW Fishing Limited | Agriculture & fishing | 2023 |
| My Brixham Holiday Limited | Hospitality | 2022 |
| My Storage Limited | Other services | 2014 |
| National Solar Ltd | Construction | 2025 |
| Natty Web Development Ltd | Other services | 2011 |
| Nautoguide Limited | Information & communication | 2012 |
| NE Obliviscaris Ltd | Professional & scientific | 2023 |
| Nebssa Limited | Professional & scientific | 2026 |
| New Cutz Ltd | Other services | 2025 |
| New Quay Inn Limited | Hospitality | 2023 |
| Newlyn Trawler Agents Ltd | Extraterritorial | 2018 |
| Nick Stone Construction Ltd | Construction | 2020 |
| Ninds Properties Limited | Real estate | 2023 |
| NK & JJ South West Ltd | Manufacturing | 2022 |
| NO Fuss Funerals Ltd | Other services | 2019 |
| Nofuss Ltd | Wholesale & retail | 2025 |
| North Devon Shellfish Limited | Agriculture & fishing | 2016 |
| North Devon Trawlers Limited | Agriculture & fishing | 2016 |
| Northfield News Ltd | Wholesale & retail | 2019 |
| Nostra Domus Limited | Real estate | 2021 |
| NUA Construction Ltd | Construction | 2022 |
| NUA Developments Ltd | Financial services | 2022 |
| Ocean Transit Limited | Transport & logistics | 2013 |
| Ocean Van Centre Ltd | Wholesale & retail | 2019 |
| Ocean View House Limited | Hospitality | 1987 |
| Ocean View Property Services Ltd | Construction | 2024 |
| Oceanic Marine Detailing Limited | Wholesale & retail | 2025 |
| Oceanweb Ltd | Information & communication | 2002 |
| OCU Torbay Limited | Manufacturing | 2024 |
| Old Mill Farm Ltd | Construction | 2020 |
| Old Walls Lodges Limited | Real estate | 2016 |
| Old Walls Vineyards Ltd | Agriculture & fishing | 2002 |
| Olive - ROO Development Limited | Real estate | 2026 |
| Ollies Icecream Ltd | Wholesale & retail | 2025 |
| Only Fitz & Orchards Ltd | Wholesale & retail | 2022 |
| Orestone Surveyors Ltd | Professional & scientific | 2025 |
| Osney Crescent Management Company Limited | Households | 2014 |
| Overspan Holdings Ltd | Wholesale & retail | 2025 |
| Overspan Limited | Wholesale & retail | 1998 |
| P R Joscelyne Limited | Professional & scientific | 2020 |
| P&Zwests Ltd | Wholesale & retail | 2024 |
| P4C Associates Ltd | Professional & scientific | 2015 |
| Paignton Gifts Ltd | Wholesale & retail | 2025 |
| Paint Marine Ltd | Wholesale & retail | 2023 |
| Palm Grove Apartments Limited | Hospitality | 2021 |
| Paranormality Limited | Information & communication | 2012 |
| Parish Poultry LLP | | 2021 |
| Parker Interiors (SW) Limited | Construction | 2021 |
| Parkfield (South West) Limited | Real estate | 1994 |
| Parkhouse Hotel (Shifnal) Limited | Extraterritorial | 2014 |
| Parry & Franklin Ltd | Hospitality | 2018 |
| Patios South West Limited | Manufacturing | 2003 |
| Paul Duggan Limited | Other services | 2025 |
| Pavely Productions Ltd | Hospitality | 2025 |
| Peninsula Dental Show Limited | Education | 2026 |
| Penpethy Close Management Company (Brixham) Limited | Hospitality | 2016 |
| Perspectrum Community Interest Company | Health & social care | 2025 |
| Pet Food Warehouse (Brixham) Limited | Wholesale & retail | 2014 |
| PGF Construction Limited | Construction | 2016 |
| Phillipson Group Ltd | Real estate | 2022 |
| Physio Perform Ltd | Education | 2019 |
| Pilates South West Ltd | Health & social care | 2011 |
| Pilgrim Heritage Sailing Foundation | Arts & recreation | 2017 |
| Pinnacle Architectural Design & Project Management Limited | Professional & scientific | 1995 |
| Platinum Healthclub Limited | Arts & recreation | 2016 |