| P&M Engineering (UK) Ltd | Manufacturing | 2013 |
| P&M Pavers (Lincoln) Ltd | Construction | 2007 |
| P&S Trade Logistics Ltd | Wholesale & retail | 2020 |
| P. a. Turner Seed Cleaning Ltd | Agriculture & fishing | 2017 |
| P. H. D. Anaesthesia Limited | Health & social care | 2009 |
| P. M Horwood Plumbing and Heating Services Ltd | Construction | 2019 |
| P. M. Daly & Co Ltd | Professional & scientific | 1998 |
| P. Westman Landscapes Limited | Administrative & support | 2002 |
| P.C. Coaches of Lincoln Corporate Trustees Limited | Professional & scientific | 2025 |
| P.C. Executive Coaches of Lincoln Limited | Administrative & support | 2013 |
| P.C.Coaches of Lincoln Holding Company Ltd | Financial services | 2017 |
| P.C.G Builders Limited | Construction | 2005 |
| P.D.F. Models Ltd | Manufacturing | 2025 |
| P.D.G Group Ltd | Construction | 2023 |
| P.E.C. Properties R. M. a. Limited | Construction | 2018 |
| P.E.C.Mechanical Handling Ltd | Wholesale & retail | 1999 |
| P.G.C. Engineering Services Ltd | Administrative & support | 2011 |
| P.J Rigging Services Ltd | Transport & logistics | 2013 |
| P.S. I Fudge YOU Ltd | Wholesale & retail | 2024 |
| P.W.Banas Ltd | Transport & logistics | 2012 |
| P1 Automotive Group Ltd | Wholesale & retail | 2024 |
| P3 Transport Ltd | Transport & logistics | 2025 |
| PAB Corporation Ltd | Administrative & support | 2014 |
| Pacey Farms Ltd | Wholesale & retail | 2026 |
| Pacey Holdings Ltd | Real estate | 2020 |
| Paddock Lane Limited | Construction | 2026 |
| Padgett Motor Engineers Ltd | Wholesale & retail | 2011 |
| Paean Property Limited | Real estate | 2006 |
| Paediatric Dermatology Limited | Health & social care | 2014 |
| Pagare Consulting Ltd | Professional & scientific | 2023 |
| Pagetiger International Limited | Financial services | 2019 |
| Pagetiger Limited | Administrative & support | 2009 |
| PAI Materials and Logistics Ltd | Transport & logistics | 2022 |
| Paint Perfect Limited | Real estate | 2019 |
| Paintal Geoscience Ltd. | Professional & scientific | 2018 |
| Pajaah Ltd | Real estate | 2011 |
| Pajaah Properties Ltd | Real estate | 2021 |
| Paladin Occupational Health Ltd | Health & social care | 2024 |
| Paladin Toys Ltd | Wholesale & retail | 2018 |
| Palings Interiors Limited | Professional & scientific | 2022 |
| Palki Spice Limited | Hospitality | 2019 |
| Pallinc Limited | Water & waste | 2015 |
| Pallinc Nottingham Ltd | Extraterritorial | 2019 |
| Pallinc Rental Limited | Manufacturing | 2024 |
| Palm Trees and 35 Degrees Ltd | Wholesale & retail | 2024 |
| Palmarama Leisure Limited | Hospitality | 1991 |
| Palmer Estate Investments Ltd | Real estate | 2024 |
| Pals Battalion CIC | Arts & recreation | 2019 |
| PAM Page Psychology Services Limited | Education | 2020 |
| Pamperapp Ltd | Households | 2019 |
| Pamx Enterprise Limited | Wholesale & retail | 2017 |
| PAN Products Ltd | Manufacturing | 1999 |
| Panaa Ltd | Wholesale & retail | 2022 |
| Panacea Finance Solutions Limited | Financial services | 2013 |
| Pang Investment Properties Limited | Real estate | 2017 |
| Panis + Caseum Ltd | Wholesale & retail | 2024 |
| Pankhurst&Clark Tiling Contractors Ltd | Construction | 2025 |
| Panorama Fountains Limited | Professional & scientific | 2026 |
| Panson Homes Limited | Construction | 2013 |
| Panson Management Ltd | Real estate | 2020 |
| Panthip Thai Ltd | Hospitality | 2024 |
| Panton Brothers Museum Unlimited | Manufacturing | 2010 |
| Parade 1955 Limited | Extraterritorial | 2014 |
| Paradigm Arts Limited | Education | 2015 |
| Paradise Enterprise Services Ltd | Hospitality | 2017 |
| Paradise Healthcare Provider Ltd | Administrative & support | 2023 |
| Paraesthetic Surgical Limited | Health & social care | 2016 |
| Paralaxclub Ltd | Wholesale & retail | 2023 |
| Paramount Doctors Limited | Health & social care | 2013 |
| Parikar Limited | Hospitality | 2024 |
| Paris Plumbing Ltd | Construction | 2024 |
| Park Farm Day Nursery Limited | Education | 2022 |
| Park Hill Quarrington Management Company Ltd | Households | 2018 |
| Park House Residential Ltd | Real estate | 2024 |
| Park Practise Counselling Limited | Health & social care | 2019 |
| Park Riding School Ltd | Arts & recreation | 2020 |
| Park School Day Nursery Ltd | Health & social care | 2016 |
| Park Street Bars Limited | Hospitality | 2026 |
| Park Street Properties (Lincoln) Limited | Professional & scientific | 1912 |
| Park Street Takeaway Limited | Hospitality | 2025 |
| Park View (Long Bennington) Management Company Limited | Households | 2020 |
| Parker Limited | Professional & scientific | 2003 |
| Parker Plastering Services Ltd | Construction | 2023 |
| Parker Windows & Doors Ltd | Construction | 2026 |
| Parkin Gerry Limited | Professional & scientific | 2011 |
| Parkinson Properties (Lincoln) Limited | Real estate | 2024 |
| Parkinson Urology Ltd | Real estate | 2019 |
| Parlour Properties (Lincs) Ltd | Real estate | 2024 |
| Parman Court Management Limited | Professional & scientific | 2019 |
| Parnell & Sons Ltd | Manufacturing | 2019 |
| Parnhams Island Limited | Construction | 2007 |
| Parque UK Investments Limited | Professional & scientific | 2015 |
| Parsa Properties Ltd | Real estate | 2025 |
| Parsons Heating Limited | Construction | 2004 |
| Pasha Foods Ltd | Hospitality | 2023 |
| Pasta Go Lincoln Ltd | Hospitality | 2018 |
| Pastures Green Ltd | Administrative & support | 2013 |
| PAT Brunnock Limited | Construction | 2015 |
| PAT Cook & Sons Ltd | Health & social care | 2012 |
| PAT Grant Limited | Agriculture & fishing | 2003 |