| Padstow Area Tourism Association Limited | Other services | 2001 |
| Padstow Cycle Hire Limited | Transport & logistics | 1996 |
| Padstow Tourist Information Centre Limited | Information & communication | 2001 |
| Pamoria Developments Ltd | Construction | 2025 |
| Parkway Timber Company Limited | Manufacturing | 1990 |
| PAT Cornwall Limited | Professional & scientific | 2005 |
| Paul Finn Solicitors Limited | Professional & scientific | 2007 |
| Paul Harris & Co. Limited | Professional & scientific | 1997 |
| Paul Hocking Safety Limited | Administrative & support | 2005 |
| Paul Trevorrow Ltd | Real estate | 2000 |
| Pauline's Ltd. | Wholesale & retail | 2000 |
| Peachpilot Limited | | 1981 |
| PEN Stone and Brick Limited | Construction | 2023 |
| Pendarves Mill Management Co. Limited | Households | 2004 |
| Pendennis Shipyard (Holdings) Limited | Manufacturing | 1988 |
| Pendennis Shipyard Limited | Manufacturing | 1994 |
| Pendray Farms | Agriculture & fishing | 1959 |
| Penfield Limited | Hospitality | 1993 |
| Pengelly Live Events Ltd | Arts & recreation | 2026 |
| Pennance House Management Company Limited | Professional & scientific | 1989 |
| Penrice House (ST. Austell) Limited | Health & social care | 1980 |
| Penrose House Limited | Households | 1974 |
| Penryn Industries Ltd. | Real estate | 2003 |
| Penryn Stores Limited | Wholesale & retail | 2007 |
| Pentewan Sands,Limited | Hospitality | 1945 |
| Pentrevah Court Management Company Limited | Households | 1997 |
| Pentyme Resources Ltd | Information & communication | 2006 |
| Penventon Rentals Ltd | Hospitality | 2026 |
| Percy Williams (Builders) Limited | Construction | 1986 |
| Periscope Publishing Limited | Information & communication | 2000 |
| Petrafiz Ltd. | Mining & quarrying | 1997 |
| PH Equip Limited | Wholesale & retail | 2004 |
| Phase 1 Engineering Ltd | Manufacturing | 2006 |
| Phenomenn Ltd | Other services | 2025 |
| Phoenix Massage Therapies Ltd | Health & social care | 2020 |
| Pinetum Trading Limited | Professional & scientific | 2024 |
| Pipeworx Limited | Construction | 2004 |
| Piran Property Group Ltd | Real estate | 2026 |
| PJR Aviation Ltd | Professional & scientific | 2022 |
| Plymouth Boat Park Limited | Wholesale & retail | 2008 |
| Polaris South West Limited | Agriculture & fishing | 2006 |
| Pooleys Limited | Professional & scientific | 2008 |
| Port Pendennis Village Management Limited | Households | 1989 |
| Potfresh Foods | | 1991 |
| Potterfield Limited | Extraterritorial | 2013 |
| Power Precision & Fabrication Limited | Manufacturing | 1966 |
| Pras Goth Limited | Manufacturing | 1984 |
| Priory Lodge Hotel Limited | Hospitality | 2003 |
| Pristine Plant Limited | Administrative & support | 2006 |
| PRJ Engineering Limited | Manufacturing | 2003 |
| PRJ Property (SW) Ltd | Construction | 2021 |
| Pro Mobility Limited | Wholesale & retail | 2005 |
| Professional Financial Centre (Cornwall) Limited | Financial services | 2003 |
| Profile Securities Limited | Real estate | 1971 |
| Proper Care (Cornwall) Ltd | Health & social care | 2005 |
| Prospect Support Services Ltd | Education | 2003 |
| Puckator Holdings Limited | Wholesale & retail | 2007 |
| Pump International Limited | Manufacturing | 1957 |
| Punk Thai Ltd | Administrative & support | 2017 |
| Pure Energy Professionals Limited | Professional & scientific | 1989 |
| PVV Property Investments Limited | Real estate | 2026 |
| Qsun Limited | Hospitality | 2005 |
| Queen's Hotels (Penzance) Limited | Hospitality | 1928 |
| Quensa Property Associates Limited | Construction | 2007 |
| Quest Estates & Developments Limited | | 1970 |
| Quiksilver Surf School Newquay Limited | Arts & recreation | 2005 |
| R H R Construction Limited | Construction | 2006 |
| R Meeson Electrical Services Limited | Construction | 2006 |
| R S Engineering S W Ltd | Manufacturing | 2006 |
| R T Julian & SON (Holdings) Limited | Professional & scientific | 2001 |
| R T Julian & SON Limited | Other services | 2001 |
| R. Booth Limited | Manufacturing | 1979 |
| R. Sleep Limited | Wholesale & retail | 1964 |
| Radnor Golf and Leisure Limited | Arts & recreation | 2004 |
| Railholiday Limited | Hospitality | 2003 |
| Rainbow Spirit Ltd | Wholesale & retail | 2005 |
| Rawley Court Limited | Households | 2003 |
| Razzmatazz Limited | Wholesale & retail | 2002 |
| RC Evans Builders Limited | Construction | 2003 |
| Realwest Limited | Professional & scientific | 1989 |
| Relaxology Ltd | Health & social care | 2019 |
| Reloved Rails Ltd | Wholesale & retail | 2025 |
| Remote Planet Limited | Information & communication | 2024 |
| Rescorla Data Solutions Limited | Information & communication | 2007 |
| Restormel Joinery Company Limited | Manufacturing | 2002 |
| RHS Plymouth Limited | Wholesale & retail | 2007 |
| Richards of Cornwall Limited | Extraterritorial | 2004 |
| Richardson (Construction) Limited | Construction | 1973 |
| Right Software Limited | | 1985 |
| Rising Sun TCG Ltd | Wholesale & retail | 2025 |
| Rite-Cote Limited | | 1981 |
| Riviere Towans Chalet Camp Management Company Limited | Hospitality | 1976 |
| RMG Projects Limited | Wholesale & retail | 2003 |
| Robur Holdings Limited | Financial services | 2024 |
| Rockhill Business Park Limited | Construction | 2005 |
| Rodda's Limited | Extraterritorial | 1999 |
| Roger White Design | Real estate | 1958 |
| Rose Innovation Limited | Real estate | 2023 |
| Roselands Caravan & Camping Park Limited | Hospitality | 2006 |
| Rosemellin Gooseberry Bush | Education | 2001 |