| N.F.K. Electrics Limited | Real estate | 1982 |
| N.G & C.A Reynolds Limited | Construction | 2003 |
| N.J. Fisheries Limited | Agriculture & fishing | 2006 |
| N.J. Whittaker Limited | Construction | 2000 |
| N.S. Burd Limited | Construction | 2007 |
| Nabhiraj Ltd | Transport & logistics | 2015 |
| Nabla Dell Limited | Professional & scientific | 2003 |
| Napps Holidays Ltd | Hospitality | 2005 |
| Nature and Therapy CIC | Other services | 2024 |
| Navikat Ltd | Transport & logistics | 2018 |
| Nawisis Ltd | Transport & logistics | 2018 |
| Neptune Fisheries Limited | Administrative & support | 2004 |
| New Cross Park Flat Management Limited | Households | 2000 |
| New Eastern Delight Ltd | Hospitality | 2025 |
| Newton Abbot and District Recreational Trust Limited | Arts & recreation | 1967 |
| Newton Abbot Chiropractic Centre Limited | Health & social care | 2002 |
| Newton Abbot Glass Limited | Construction | 1975 |
| Newton Motor Bodies Limited | Wholesale & retail | 1998 |
| Nexrose Limited | Wholesale & retail | 1995 |
| Nexus Containerlink Ltd | Extraterritorial | 1994 |
| NIC Lovell School of Motoring Limited | Education | 2005 |
| Nigel Webster & Co Limited | Professional & scientific | 1998 |
| Nigmar Limited | Wholesale & retail | 2006 |
| Nikabar Ltd | Administrative & support | 2018 |
| Nine Marketing Studios Limited | Professional & scientific | 2017 |
| Nixon Plumbing and Heating Limited | Wholesale & retail | 2005 |
| NJT Plumbing & Heating Limited | Construction | 2006 |
| Nomadic Travel Ltd | Administrative & support | 1999 |
| North Devon Consulting Limited | Administrative & support | 2007 |
| North Devon Farm Services Limited | Agriculture & fishing | 2004 |
| North Devon Homes | Construction | 1998 |
| Northbeach Ltd | Professional & scientific | 2006 |
| Notts Contractors Limited | Administrative & support | 1995 |
| Nu-Type Limited | Professional & scientific | 1987 |
| Numb LIP Media Ltd | Professional & scientific | 2019 |
| NYE Skill Ltd | Manufacturing | 2025 |
| Oak Close Management Limited | Households | 2019 |
| Oak Park (South) Limited | Households | 1990 |
| Oakleigh Homes (SW) Limited | Construction | 2002 |
| Occident Capital Limited | Real estate | 1996 |
| Ocean Architects Limited | Professional & scientific | 1994 |
| Ocean City College Ltd | Education | 2000 |
| Ocean Hair Academy Limited | Other services | 2007 |
| Ocean Healthcare Agency Ltd | Administrative & support | 2023 |
| Ocean`S Edge (Devon) Limited | Real estate | 2005 |
| Ogdens Scaffolding Services Limited | Construction | 2006 |
| Okehampton Glass Limited | Wholesale & retail | 2000 |
| Okehampton Skills and Sports Trust | Real estate | 2016 |
| Oldway View Management Company Limited | Households | 1994 |
| Olympia Amusement Centre Limited | Arts & recreation | 1979 |
| ON to the Ladder Limited | Administrative & support | 2006 |
| Optima Excel Limited | Professional & scientific | 2002 |
| Oracle Developments Limited | Construction | 1999 |
| Orchard Farm Limited | Wholesale & retail | 2007 |
| Orchard Forest School CIC | Education | 2021 |
| Orchard Gardens (Teignmouth) Management Co Ltd. | Real estate | 2002 |
| Orchard Leadership Limited | Administrative & support | 2008 |
| Orfaks Ltd | Transport & logistics | 2018 |
| Osborne House (Seaton) Limited | Households | 2000 |
| Osborne Property Company Limited | Construction | 1997 |
| OTR (Exeter) Limited | Real estate | 1998 |
| Otter Management Limited | Construction | 1999 |
| Otter Nurseries (Bristol) Limited | Wholesale & retail | 2024 |
| Otter Nurseries Limited | Wholesale & retail | 1980 |
| Otter Nurseries Lymington Limited | Wholesale & retail | 2002 |
| Overland Coachlines Limited | | 1989 |
| Owen and Yabsley Limited | Agriculture & fishing | 1955 |
| P R Garage Equipment Limited | Manufacturing | 2002 |
| P Wheeler & SON Carpentry Contractors Ltd. | Construction | 2003 |
| P&D Laminators Limited | Manufacturing | 1999 |
| P.M. Management Limited | Hospitality | 1999 |
| Paignton Specsavers Limited | Wholesale & retail | 1996 |
| Paintel Limited | Construction | 2003 |
| PAK Textiles Limited | Professional & scientific | 1933 |
| PAL Properties South West Ltd | Construction | 2007 |
| Pale FOX Limited | Administrative & support | 2007 |
| Palm Springs Hotel Limited | Hospitality | 2003 |
| Pankhurst Trading Limited | Administrative & support | 2006 |
| Pannell Commercials Limited | Wholesale & retail | 2002 |
| Papercut Limited | Information & communication | 2001 |
| PAR 3 Putting Limited | Manufacturing | 1993 |
| Park Homes Limited | | 1983 |
| Parklands Homes Ltd | Administrative & support | 2000 |
| Parkway (Sports & Social Club) Limited | Hospitality | 1996 |
| Parrex Limited | | 1982 |
| Pashley Quantity Surveying Limited | Administrative & support | 2013 |
| Pastry Academy UK Limited | Hospitality | 2024 |
| Patawur Ltd | Administrative & support | 2018 |
| Paul Foggo & Co | | 1994 |
| Paul Manley & Sons General Builders Ltd | Construction | 2004 |
| Paul O`Nions Plumbing & Heating Limited | Construction | 2004 |
| Paul Shepherd Limited | Transport & logistics | 2004 |
| Paving South West Limited | | 1988 |
| Pawlyn and Co Limited | Financial services | 1997 |
| Paye Role Limited | Professional & scientific | 2003 |
| Pbms (Torquay) Limited | Real estate | 2001 |
| PC Media Supplies Limited | Information & communication | 2005 |
| PEA and Mint Ltd | Wholesale & retail | 2006 |
| Peace River Properties Limited | Real estate | 1996 |
| Peach's Garage Limited | Wholesale & retail | 2002 |