| Natural Canvas Landscaping Ltd | Administrative & support | 2025 |
| Natural CBD Evolution Limited | Wholesale & retail | 2018 |
| NBF Alpine Adventures Ltd | Other services | 2017 |
| Neotec International Ltd | Professional & scientific | 2026 |
| NET Glue Limited | Information & communication | 2010 |
| Netgorilla Ltd | Information & communication | 2010 |
| New Devon Homes Ltd | Construction | 2018 |
| New Roots Workshop CIC | Education | 2023 |
| Newbrook Investments Limited | Professional & scientific | 2022 |
| Newmans Holiday Homes Ltd | Administrative & support | 2013 |
| Next Steps Consulting Limited | Professional & scientific | 2024 |
| Nibbley PIG Developments Limited | Manufacturing | 2025 |
| Nican Group Limited | Information & communication | 2020 |
| Nield Holdings Limited | Real estate | 2025 |
| Ninepound Limited | Transport & logistics | 2014 |
| Nisaro Ltd | Real estate | 2021 |
| Nlwry Ltd | Administrative & support | 2024 |
| NM Drylining South West Limited | Construction | 2023 |
| NMD Building Solutions Limited | Construction | 2016 |
| NO10 Management Company Limited | Households | 2016 |
| Noobric Limited | Information & communication | 2019 |
| Northstar Private Services Ltd | Real estate | 2026 |
| Northstart Ltd | Information & communication | 2026 |
| Norton Garth (Sidmouth) Limited | Households | 2010 |
| Norwegian Paper UK Limited | Financial services | 2013 |
| Nrds Contractors Limited | Administrative & support | 2013 |
| Number 10 Developments Ltd. | Construction | 2007 |
| Nutwell Farms (2017) Limited | Extraterritorial | 2017 |
| Nutwell Farms Limited | Real estate | 2017 |
| O Mason Dentistry Limited | Health & social care | 2019 |
| Oakhanger Residential Limited | Hospitality | 1999 |
| Ocean House 247 Limited | Hospitality | 2026 |
| Ocean Life Group Ltd | Agriculture & fishing | 2025 |
| Ocean Quest Land Limited | Households | 2017 |
| OG Sidmouth Limited | Extraterritorial | 1959 |
| Ogden Kibble Ltd | Real estate | 2015 |
| Okewood Court Holdings (Exmouth) Limited | Households | 1960 |
| Old Abbey Court (Exeter) Residents Association Limited | Households | 1963 |
| Oldbury's Building Restorations Ltd | Construction | 2020 |
| Omega Pro Ltd | Wholesale & retail | 2026 |
| OML Support Services Ltd | Administrative & support | 2023 |
| ON Point Carpentry Limited | Construction | 2021 |
| One Body Ventures Ltd | Hospitality | 2024 |
| One Percent Trading Limited | Information & communication | 2025 |
| One-Shot Motor Sport Limited | Wholesale & retail | 1987 |
| Onism Productions Ltd | Information & communication | 2023 |
| Open Door Exmouth | Health & social care | 2002 |
| Ophelia Talks Ltd | Wholesale & retail | 2022 |
| Oplon Ltd | Professional & scientific | 2019 |
| Optimalworks Ltd | Information & communication | 2006 |
| Opus HR Ltd | Administrative & support | 2018 |
| Ordaloca Ltd | Information & communication | 2020 |
| Origin Sales Consultancy Ltd | Information & communication | 2022 |
| OTO Projects C.I.C. | Arts & recreation | 2010 |
| Otterdene Equestrian & Glamping Limited | Hospitality | 2026 |
| Outsourced Energy Limited | Administrative & support | 2020 |
| P & D Investments (South West) Limited | Construction | 2017 |
| P & E Jordan Limited | Administrative & support | 2012 |
| P a Dermatology Limited | Health & social care | 2023 |
| P Good Choice Limited | Hospitality | 2016 |
| P J Pearman & Sons Limited | Construction | 2016 |
| P P Properties (South West) Limited | Professional & scientific | 2006 |
| P3AK Limited | Information & communication | 2021 |
| Paella Lovers Limited | Wholesale & retail | 2022 |
| Paige Publishing Limited | Administrative & support | 1997 |
| Paignton Holiday Caravans Limited | Administrative & support | 2022 |
| PAJ Investments Limited | Real estate | 2011 |
| Palmers Automotive Group Limited | Wholesale & retail | 2026 |
| Palmers Garage Ltd | Wholesale & retail | 2017 |
| Pankhurst Joinery Limited | Manufacturing | 2015 |
| Parktech Solutions Ltd | Extraterritorial | 2024 |
| Parliament Square (Crediton) Management Company Limited | Households | 2006 |
| Parminter Close (Exmouth) Management Company Limited | Households | 2018 |
| Parrotgate Limited | Real estate | 1981 |
| Patronus Security UK Limited | Administrative & support | 2009 |
| Paul Gaskell Builders Limited | Construction | 2016 |
| Paul Kent AI Ltd | Education | 2025 |
| PB Electrical (UK) Ltd | Construction | 2006 |
| PC Deliveries Ltd | Transport & logistics | 2021 |
| PD Tech Consulting Limited | Information & communication | 2023 |
| Peachspark Ltd | Health & social care | 2025 |
| Peak Property Maintenance Ltd | Construction | 2025 |
| Pencarwick House Exmouth Management Company Limited | Households | 1972 |
| Pendeen Court (Management) Limited | Households | 2004 |
| Pendeen House Management Limited | Households | 2004 |
| Penny's Estate Agents Limited | Real estate | 1999 |
| Pennys Rentals Ltd | Real estate | 2021 |
| Performance Training Academy Ltd | Other services | 2022 |
| Personal Projects Ltd | Administrative & support | 2023 |
| Phase Academy Ltd | Arts & recreation | 2025 |
| Phoenix Collection Group Limited | Hospitality | 2024 |
| Phoenix Counselling Services | Health & social care | 2003 |
| Phone Solutions (SW) Ltd | Wholesale & retail | 2023 |
| PHX Sports Group Ltd | Manufacturing | 2026 |
| Pigeon Property Limited | Real estate | 2021 |
| Pilates and Counselling for Life Limited | Arts & recreation | 2010 |
| Pinhoe Limited | Real estate | 2023 |
| Pittfarm (Lympstone) Management Company Limited | Households | 1998 |
| Pixel Fridge Ltd | Information & communication | 2018 |
| PJ Luxton Ltd | Construction | 2021 |