| Orwell Accountants Ltd | Professional & scientific | 2014 |
| Orwell Autos Limited | Wholesale & retail | 2020 |
| Orwell Diesel Engines Limited | Extraterritorial | 2010 |
| Orwell Helicopters Limited | Transport & logistics | 2020 |
| Orwell Marine Limited | Agriculture & fishing | 2020 |
| Orwell Offshore Holdings Ltd | Professional & scientific | 1997 |
| Orwell Road (Felixstowe) Management Company Limited | Households | 2019 |
| Orwellfelixstowe Limited | Hospitality | 2024 |
| P and K Home Interiors Ltd | Wholesale & retail | 2017 |
| P D Properties & Investments Ltd | Other services | 2013 |
| P.Adams & Sons(Farms)Limited | Agriculture & fishing | 1959 |
| P.S.A. Transport Holdings Limited | Financial services | 2023 |
| P.S.A.Transport Limited | Transport & logistics | 1940 |
| PAF Parra Ltd | Other services | 2019 |
| Page QS Services Limited | Professional & scientific | 2013 |
| Pangolin Studios Ltd | Information & communication | 2022 |
| Panndorah Ltd | Administrative & support | 2021 |
| Park Court Freehold (Felixstowe) Ltd | Households | 2022 |
| Parkside Housing Limited | Other services | 2015 |
| PAS Holding Co Limited | Agriculture & fishing | 2024 |
| Pasatransport Ltd | Transport & logistics | 2024 |
| Patio Heater Doctor Ltd | Manufacturing | 2003 |
| Patio Heaters Direct Ltd | Wholesale & retail | 2007 |
| Patrick Stockley Limited | Professional & scientific | 1999 |
| Patten Resource Management Ltd | Professional & scientific | 2013 |
| Paul Hogger Consultancy Limited | Information & communication | 2023 |
| Paul Ltd Ltd | Transport & logistics | 2019 |
| Pavilion Auto Services Limited | Wholesale & retail | 1983 |
| PCH Transport Ltd | Transport & logistics | 2014 |
| PCS South East Ltd | Transport & logistics | 2024 |
| Pebbledrift Limited | Real estate | 2014 |
| Pellegrino Transport Limited | Transport & logistics | 2024 |
| Penston Property Group Ltd | Real estate | 2025 |
| Penta (GB) Limited | Transport & logistics | 2003 |
| Penta GB Holdings Limited | Financial services | 2023 |
| Perfect Kebab House Ltd | Hospitality | 2024 |
| Pertwee Park Limited | Real estate | 2003 |
| Pete and Eric Sportswear Ltd | Manufacturing | 2025 |
| Pete's Plumbing & GAS Ltd | Construction | 2017 |
| Petre Services Ltd | Transport & logistics | 2011 |
| Pharm Plant Power Ltd | Manufacturing | 2023 |
| Phelan Sheppard Cleaning Services Ltd | Administrative & support | 2019 |
| Phil Cobbold Planning Ltd | Professional & scientific | 2015 |
| PHILLIPOQUATTRO1 Ltd | Real estate | 2023 |
| Phillips Mobility Limited | Wholesale & retail | 2006 |
| Phoenix Leisure Limited | Arts & recreation | 1975 |
| Phong LUU Studio Ltd | Information & communication | 2026 |
| Pickupanddrop Ltd | Transport & logistics | 2025 |
| Pier Amusements Felixstowe Ltd | Arts & recreation | 1967 |
| Pier Amusements Group Limited | Financial services | 2026 |
| Pika 2019 Ltd | Transport & logistics | 2019 |
| Pilcher Holdings Ltd | Financial services | 2023 |
| Pilcher Investments Limited | Real estate | 2025 |
| Pinnaclefx Marketing Solutions Ltd | Professional & scientific | 2024 |
| PL Logistics 2021 Ltd | Transport & logistics | 2021 |
| PL5800 Ltd | Transport & logistics | 2021 |
| Platinum LUX Automotive Ltd | Transport & logistics | 2024 |
| Platinum Sports & Prestige Ltd | Transport & logistics | 2022 |
| PNC Consulting Ltd | Information & communication | 2017 |
| Poetry & Prose Ltd | Arts & recreation | 2018 |
| Pokemon Industry Co. Ltd | Wholesale & retail | 2024 |
| Port Logistics Ltd | Transport & logistics | 2013 |
| Port of Felixstowe Limited | Transport & logistics | 1991 |
| Port of Felixstowe Pension Trustee Limited | Administrative & support | 1992 |
| Port of Felixstowe Trustee Limited | Professional & scientific | 1993 |
| Portlink Transport Services Ltd | Transport & logistics | 2024 |
| Posh Convenience Store Ltd | Wholesale & retail | 2026 |
| Posh Valeting Center Limited | Other services | 2018 |
| Postupalenko Limited | Wholesale & retail | 2016 |
| Poxyuk Ltd | Wholesale & retail | 2024 |
| Pprp Limited | Financial services | 1980 |
| Praetorian Guard AI Ltd | Administrative & support | 2025 |
| Pretty Crafty Online Limited | Wholesale & retail | 2014 |
| Pretty Peach Boutique Ltd | Extraterritorial | 2024 |
| Prime Convenience Felixstowe Ltd | Wholesale & retail | 2019 |
| Prismora Global Ltd | Wholesale & retail | 2025 |
| Probull Ltd | Transport & logistics | 2015 |
| Professional Cargo Handling Ltd | Transport & logistics | 2018 |
| Projection Education Ltd | Education | 2023 |
| Prologic Forwarding Consultants Limited | Transport & logistics | 2001 |
| Prologic Services Limited | Transport & logistics | 2004 |
| Property by CPC Ltd | Real estate | 2021 |
| Protivnick Training Ltd | Public administration | 2025 |
| Q Z Contractors Limited | Construction | 2019 |
| Quality Discovery Limited | Hospitality | 1997 |
| Quay Smart Ltd | Information & communication | 2021 |
| R&B Roobson Ltd | Transport & logistics | 2026 |
| R.J. Watling Limited | Extraterritorial | 2021 |
| RA Hotels Management Ltd | Hospitality | 2024 |
| Racoon Limited | Transport & logistics | 2025 |
| Radanov Ltd | Transport & logistics | 2023 |
| Raffael S Limited | Transport & logistics | 2018 |
| Raimondas Transport Services Ltd | Transport & logistics | 2017 |
| Rairoz Ltd | Transport & logistics | 2022 |
| Raisa & Rebeca Transport Ltd | Transport & logistics | 2024 |
| Raisu Ltd | Transport & logistics | 2020 |
| Ramyytrans Ltd | Transport & logistics | 2016 |
| Random Aerospace Limited | Extraterritorial | 2016 |
| Randoms, New Used Refurbed Ltd | Wholesale & retail | 2025 |
| Ranelagh Court Management Company Limited | Real estate | 1991 |