| Palmeira Group Limited | Administrative & support | 2021 |
| Panevino Ltd | Hospitality | 2024 |
| Parker Property Developments Limited | Real estate | 2016 |
| Parml Ltd | Administrative & support | 2021 |
| Parrottfish Scuba Ltd | Wholesale & retail | 2023 |
| Partridge FEN Gundogs Ltd | Agriculture & fishing | 2016 |
| Parva Commerce Ltd | Other services | 2017 |
| Pasey Limited | Administrative & support | 2012 |
| Pathogen Prevention Ltd | Administrative & support | 2020 |
| Paxton Investments Limited | Real estate | 2006 |
| PB Recruitment Solutions Limited | Administrative & support | 2007 |
| Pelican Diagnostics Ltd | Wholesale & retail | 2023 |
| Pelstone Limited | Households | 2001 |
| People by Numbers Ltd | Professional & scientific | 2019 |
| Performance Publishing Limited | Information & communication | 2006 |
| Perma-Grit Tools Ltd | Wholesale & retail | 2005 |
| Personalised Parcels Ltd | Administrative & support | 2015 |
| Personnel Advice & Solutions Ltd | Professional & scientific | 2004 |
| Pet to VET Ltd | Professional & scientific | 2016 |
| PFD Atkinson Ltd | Real estate | 2010 |
| Pfengineering Limited | Professional & scientific | 2019 |
| Phoenix Bodyworx Ltd | Wholesale & retail | 2020 |
| Phoenyx Customs Ltd | Wholesale & retail | 2022 |
| Phonze Care Ltd | Wholesale & retail | 2022 |
| Physio Consortium Ltd | Health & social care | 2026 |
| Pinchbeck United Ltd | Arts & recreation | 2017 |
| Pippin's Palace Pet Care Ltd | Other services | 2026 |
| Pitch and Track Holdings Limited | Financial services | 2013 |
| Pitch and Track Ltd | Administrative & support | 2007 |
| Pivotal Technologies Limited | Information & communication | 2016 |
| PJY Holdings Ltd | Financial services | 2025 |
| Playhouse Yard Management Limited | Households | 2011 |
| Pleisuretime PUB Company Limited | Hospitality | 2007 |
| PMC Accountancy Limited | Professional & scientific | 2023 |
| Pmichael Auto Services Limited | Wholesale & retail | 2023 |
| PND Thai Limited | Hospitality | 2020 |
| Polar Construction Limited | Construction | 2003 |
| Polchi International Ltd | Hospitality | 2020 |
| Polished Surfaces Ltd | Construction | 2023 |
| Polyretic Ltd | Wholesale & retail | 2023 |
| POP in Bargain Shop Limited | Wholesale & retail | 2016 |
| Popdaly Properties Limited | Real estate | 2015 |
| Portland Road PR Limited | Households | 2024 |
| Potters Sports & Leisure Limited | Hospitality | 2016 |
| Praxis Research and Innovation Ltd | Professional & scientific | 2025 |
| Pre-Sure Limited | Other services | 2007 |
| Preman Limited | Real estate | 1989 |
| Premier Cabs Grantham Ltd | Transport & logistics | 2017 |
| Prestige Accounting Limited | Professional & scientific | 2003 |
| Prestons Trading Limited | Agriculture & fishing | 2006 |
| Prevail Strength and Conditioning Ltd | Arts & recreation | 2024 |
| Prime M&E Solutions Limited | Construction | 2019 |
| Prime Pick Store 1 Ltd | Wholesale & retail | 2026 |
| Priority Associates Ltd | Information & communication | 1995 |
| Prodose Ltd | Manufacturing | 2010 |
| Professional Freight Ltd | Transport & logistics | 2026 |
| Professional Paddock Care Limited | Construction | 2014 |
| Project Lotus Ltd | Professional & scientific | 2025 |
| Pronto Rugby Ltd | Arts & recreation | 2023 |
| Propcon Lincs Ltd | Real estate | 2023 |
| Proven Infosec UK Ltd | Information & communication | 2026 |
| Provenance AG Holdings Ltd | Financial services | 2021 |
| Proventure Property Limited | Financial services | 2012 |
| PRW HV Solutions Limited | Construction | 2026 |
| PSM Financial Planning Ltd | Professional & scientific | 2020 |
| Pulse Education and Business Services Limited | Education | 2015 |
| Pumping & Drainage Systems (U.K.) Limited | Construction | 1998 |
| Pure Line Academy by Leana Bernot Ltd | Wholesale & retail | 2020 |
| Pure Line Limited | Other services | 2016 |
| Puttock Construction Ltd | Construction | 2016 |
| Pym's Consultancy Ltd | Professional & scientific | 2014 |
| Pyrah Technical Services Limited | Manufacturing | 2014 |
| QH PUB KLT Ltd | Hospitality | 2025 |
| Qml(Uk) Limited | Transport & logistics | 2008 |
| QPM Support Ltd | Information & communication | 2022 |
| Quadrant Renovations Ltd | Construction | 2022 |
| Quarrington Design Limited | Professional & scientific | 2012 |
| Quasar Publications Ltd | Other services | 2021 |
| Qwalspec Limited | Professional & scientific | 2017 |
| R & J Spencer Limited | Construction | 2006 |
| R J Malik Health Ltd | Health & social care | 2026 |
| R North Bespoke Furniture Ltd | Manufacturing | 2023 |
| R S Delivery Ltd | Transport & logistics | 2024 |
| R&A Fuller Installations & Construction Limited | Construction | 2024 |
| R&C Boughen Ltd | Administrative & support | 2020 |
| R&Mb Ltd | Agriculture & fishing | 2014 |
| R&R Hotels Limited | Hospitality | 2024 |
| R. Lunn Developments Limited | Real estate | 1985 |
| R. Walsh Developments Limited | Construction | 2002 |
| R.E.P. Estates Limited | Real estate | 1905 |
| Radiant Heating Holdings Limited | Professional & scientific | 2022 |
| Rafa Care Limited | Health & social care | 2025 |
| Raft Supply Chain Services Ltd | Professional & scientific | 2021 |
| Range & Country Ltd | Arts & recreation | 2018 |
| Range & Country Shooting Supplies Ltd | Wholesale & retail | 2013 |
| RAS Healthcare Solutions Limited | Health & social care | 2025 |
| Rauceby Church of England Primary School | Education | 2012 |
| Rauceby Electrical Ltd | Construction | 2022 |
| Rauceby Grange Consulting Ltd | Professional & scientific | 2023 |
| Rauceby Hall Leisure Ltd | Hospitality | 2022 |