| PDN Pharm Ltd | Professional & scientific | 2016 |
| PDP Concepts Limited | Professional & scientific | 2016 |
| Peacefield Properties Limited | Real estate | 2007 |
| Peach Pubs Limited | Hospitality | 2006 |
| Peak Performance Ltd | Manufacturing | 2008 |
| Pearce Associates Limited | Professional & scientific | 2026 |
| Pearce Baker Holdings Ltd | Real estate | 2026 |
| Pearce Property Developments (Lincs) Limited | Real estate | 2021 |
| Pearfern Limited | Manufacturing | 1996 |
| Pearl Holdings NW Ltd | Wholesale & retail | 2017 |
| Pearson Professional Limited | Professional & scientific | 2025 |
| Pedal Lock Limited | Extraterritorial | 2012 |
| PEJAYCO25 Limited | Professional & scientific | 2025 |
| PEL Engineering Ltd | Professional & scientific | 2018 |
| Pelagia (UK) Limited | Manufacturing | 1992 |
| Pelham 66 Ltd | Professional & scientific | 2020 |
| Pelham Accountants 2019 Limited | Professional & scientific | 2019 |
| Pelham Barnetby Limited | Transport & logistics | 2019 |
| Pelham Investment Group Ltd | Other services | 2018 |
| Pelham Nominee Investment Company | Financial services | 2015 |
| Pelham Nominees Limited | Professional & scientific | 1999 |
| Pelham Philadelphia Limited | Financial services | 2020 |
| Pelham Weelsby Limited | Financial services | 2019 |
| Pelican Engineering Solutions Limited | Professional & scientific | 2016 |
| PEN Property Group Ltd | Real estate | 2025 |
| Penny Mews Management Company (Waltham) Limited | Households | 2005 |
| Peoples Cardiology Ltd | Health & social care | 2018 |
| Pepi's Pizza House Limited | Hospitality | 2003 |
| Perendo Ltd | Health & social care | 2023 |
| Perfect Cosmetics UK Limited | Wholesale & retail | 2020 |
| Perfect YOU Aesthetics Ltd | Other services | 2021 |
| Performance LAB Grimsby Ltd | Arts & recreation | 2020 |
| Period Dream Homes Limited | Real estate | 2007 |
| Period Pine Doors Limited | Wholesale & retail | 2014 |
| Persona (UK) Ltd. | Administrative & support | 1981 |
| Personal Touch Mortgages Ltd | Financial services | 2009 |
| Pesky AI Ltd | Information & communication | 2025 |
| Pestfree Pest Control Limited | Administrative & support | 2016 |
| Pete & LIZ Limited | Health & social care | 2004 |
| Pete Stark Site Services Ltd | Construction | 2019 |
| Pete's Courier Services Ltd | Transport & logistics | 2025 |
| Peter Hodson Limited | Arts & recreation | 2002 |
| Peter Hogarth and Sons Limited | Wholesale & retail | 1973 |
| Peter Strawson Limited | Agriculture & fishing | 1962 |
| Peter W Pinchbeck Limited | Wholesale & retail | 1977 |
| Petra House Ltd | Hospitality | 2019 |
| Petra Pizzeria Ltd | Hospitality | 2024 |
| Pettiford Engineering Limited | Construction | 2016 |
| Pettigrew Builders Limited | Construction | 2008 |
| PEW Solutions Ltd | Real estate | 2020 |
| PGM Caravan Services Limited | Construction | 2005 |
| PGR Engineering Limited | Manufacturing | 2015 |
| PH Engineering Consultants Ltd | Manufacturing | 2015 |
| PHD Ceilings and Partitions Ltd | Construction | 2019 |
| PHD Properties (Lincs) Ltd | Real estate | 2026 |
| Phil Dixon Consult Limited | Professional & scientific | 2021 |
| Phil Riley Ltd | Construction | 2008 |
| Phil's Grimsby Fish Emporium Limited | Wholesale & retail | 2015 |
| Philip Burrluck Ltd | Administrative & support | 2022 |
| Philip GUY Ltd | Professional & scientific | 2022 |
| Philip Leggett Limited | Hospitality | 2003 |
| Philip Nicholas Limited | Other services | 2017 |
| Philips Leonard Limited | Real estate | 2021 |
| Phillyn Limited | Professional & scientific | 2021 |
| Philta Ltd | Information & communication | 2023 |
| Phoenix Computers (Repairs & Upgrades) Ltd | Other services | 2003 |
| Phoenix Dunlop Pension Trustees Limited | Professional & scientific | 2000 |
| Phoenix Facilities (Lincs) Ltd | Administrative & support | 2021 |
| Phoenix OIL & Marine Limited | Professional & scientific | 2000 |
| Phoenix Refrigeration Services Ltd | Manufacturing | 1998 |
| Phoenix Sales and Lettings Limited | Households | 2025 |
| Phoenix T.C. Services Ltd | Transport & logistics | 2025 |
| Phoenix Theatre Arts Limited | Arts & recreation | 2007 |
| Phoenix Theatre School Limited | Education | 2014 |
| Physio First Centre (Grimsby) Limited | Health & social care | 2007 |
| Physio-Works (UK) Limited | Health & social care | 2011 |
| Pic-A-Pop Limited | Hospitality | 2018 |
| Pickston Signs Limited | Professional & scientific | 2002 |
| Pico Financial Planning Ltd | Financial services | 2016 |
| Picture Windows (Lincs) Limited | Construction | 2011 |
| PIE Ltd | Wholesale & retail | 2021 |
| Piechna Ltd | Transport & logistics | 2016 |
| Piling Support Services Limited | Wholesale & retail | 2006 |
| Pinchbeck Plant Hire Ltd | Construction | 2021 |
| Pinewalk Management Company (Cleethorpes) Limited | Households | 2013 |
| Pingley Court Care Limited | Health & social care | 2018 |
| Pingley Management Company Limited | Professional & scientific | 2009 |
| Pink Technologies Limited | Wholesale & retail | 2018 |
| Pinnacle Home Improvements (Lincs) Limited | Construction | 2009 |
| Pipework Supplies Limited | Administrative & support | 2023 |
| Piping & Engineering Services Limited | Professional & scientific | 2023 |
| Pippins Wholesale Limited | Wholesale & retail | 2009 |
| PIT Stop Servicing Ltd | Wholesale & retail | 2020 |
| Piter Ltd | Transport & logistics | 2021 |
| Piter Trans Ltd | Transport & logistics | 2026 |
| Pivotal Skills Ltd | Arts & recreation | 2007 |
| Pixabel Limited | Information & communication | 2015 |
| Pixel Fusion Ltd | Information & communication | 2023 |
| Pizza Bono Ltd | Hospitality | 2026 |
| Pizza Capri Scartho Limited | Hospitality | 2019 |