| Peptogenix Peptides Ltd | Professional & scientific | 2025 |
| Perama Limited | Financial services | 2019 |
| Peramos Ltd | Transport & logistics | 2024 |
| Perbarn Limited | Construction | 2014 |
| Percheron Advisory Limited | Professional & scientific | 2019 |
| Peregrine NUL Limited | Real estate | 1996 |
| Peregrine Smith Property Ltd | Real estate | 2024 |
| Peregrine Smith Rentals Limited | Real estate | 2025 |
| Perennials and Sutherland Studio London Limited | Wholesale & retail | 2017 |
| Perfect Dynamics Ltd | Other services | 2026 |
| Perfect Fit Solutions Ltd | Wholesale & retail | 2018 |
| Perfect House Trading Ltd | Construction | 2017 |
| Perfect Placement Automotive Recruitment Limited | Professional & scientific | 2012 |
| Perfect Placement Employment Agencies Ltd | Extraterritorial | 2013 |
| Perfect Placement Limited | Extraterritorial | 2007 |
| Perfect Placement Motor Trade Jobs Limited | Professional & scientific | 2012 |
| Perfect Placement Personnel Ltd | Extraterritorial | 2013 |
| Perfect Placement Properties Limited | Extraterritorial | 2012 |
| Perfect Placement Recruitment Limited | Professional & scientific | 2012 |
| Perfect Placement Recruitment Specialists Limited | Extraterritorial | 2012 |
| Perfect Placement Staffing Ltd | Extraterritorial | 2013 |
| Perfect Placement UK Limited | Administrative & support | 2003 |
| Perfect Placements Limited | Extraterritorial | 2005 |
| Perfect Polish Limited | Other services | 2013 |
| Perfect Refill Ltd | Wholesale & retail | 2025 |
| Perfect Repair UK Ltd | Wholesale & retail | 2016 |
| Perfect Structure Limited | Professional & scientific | 2006 |
| Perfecta Beauty Consultancy Limited | Administrative & support | 2006 |
| Perfectcurv Ltd | Information & communication | 2022 |
| Perfectly Attired Limited | Wholesale & retail | 2011 |
| Perfectly Autistic Ltd | Professional & scientific | 2018 |
| Perfectone Ltd | Wholesale & retail | 2025 |
| Perfit Fitness Limited | Arts & recreation | 2020 |
| Perfit Recovery Ltd | Health & social care | 2026 |
| Peri Fresco Limited | Hospitality | 2022 |
| Perico Services Ltd | Wholesale & retail | 2018 |
| Peridot House Ltd | Health & social care | 2021 |
| Period Home Fittings Limited | Wholesale & retail | 2021 |
| Peritus Energy and Water Limited | Professional & scientific | 2018 |
| Perk Accounting Limited | Professional & scientific | 2011 |
| Perkman Associates (PVT) Ltd | Professional & scientific | 2011 |
| Permanent Recruitment Personnel Limited | Administrative & support | 2023 |
| Perne Close Management Limited | Households | 2019 |
| Perrl Promotions Ltd | Arts & recreation | 2021 |
| Perrlee Events Ltd | Arts & recreation | 2023 |
| Perry Barr Grocery Ltd | Wholesale & retail | 2020 |
| Perry Motor Company Ltd | Wholesale & retail | 2022 |
| Perrys Paint & Restoration Ltd | Wholesale & retail | 2020 |
| Perscitus Computer Consultants Limited | Information & communication | 2013 |
| Persephone BIO Ltd | Manufacturing | 2014 |
| Pershore Catering Limited | Hospitality | 2013 |
| Personal Enterprise Ltd | Information & communication | 2025 |
| Personal Visual Limited | Information & communication | 2010 |
| PERSONALISED4U Ltd | Wholesale & retail | 2020 |
| Personnalite Solutions Ltd | Administrative & support | 2018 |
| Persuasion Studio Ltd | Information & communication | 2003 |
| Pesky Investment Company | Financial services | 2023 |
| Pet Behaviour Practice Ltd | Professional & scientific | 2017 |
| Pet Pals Retreats Limited | Other services | 2025 |
| Petans Limited | Mining & quarrying | 1984 |
| Peter Colby Commercials Limited | Real estate | 1974 |
| Peter Collins Consultancy Limited | Education | 2020 |
| Peter Edgar Properties Ltd | Real estate | 2024 |
| Peter Frank Photography Ltd | Administrative & support | 2014 |
| Peter Hallam Limited | Health & social care | 2012 |
| Peter Mitchell Safety Solutions Limited | Other services | 2013 |
| Peter Nlek Limited | Information & communication | 2018 |
| Peter Richards Energy Services Ltd | Professional & scientific | 2023 |
| Peter ROY Associates Limited | Professional & scientific | 2009 |
| Peter Shepherd Consulting Ltd. | Professional & scientific | 2013 |
| Peter Simon & Co Limited | Professional & scientific | 2024 |
| Peter Sowerby Foundation | Professional & scientific | 2013 |
| Peterborough Plant Sales Limited | Hospitality | 2012 |
| Peterborough Speedway Limited | Arts & recreation | 2018 |
| Peters Capital Limited | Financial services | 2021 |
| Petersfield Drive Management Company Limited | Households | 2009 |
| Peterson James & Co Ltd | Professional & scientific | 2020 |
| Petra Boase Limited | Wholesale & retail | 2012 |
| Petrell Limited | Wholesale & retail | 2001 |
| Petrofab Services Limited | Construction | 2017 |
| Petrogramme Management Services (U.K.) Limited | Administrative & support | 1978 |
| Petrolheadprizes Ltd | Wholesale & retail | 2026 |
| Petromarsh Limited | Manufacturing | 2026 |
| Petroweld Consultancy Ltd | Professional & scientific | 2023 |
| Pettitt and BOO Ltd | Wholesale & retail | 2021 |
| Petviar Limited | Wholesale & retail | 2019 |
| Pevc Partners Limited | Professional & scientific | 2023 |
| Pevi Limited | Health & social care | 2025 |
| Pex-Amc Ltd | Professional & scientific | 2021 |
| PFB Building Safety Limited | Administrative & support | 2007 |
| PFB CMS Ltd | Administrative & support | 2013 |
| PFB Construction Management Services Ltd. | Administrative & support | 1994 |
| PFB Ltd | Hospitality | 2023 |
| PFB Solar Ltd | Energy | 2019 |
| Pfbio Ltd | Professional & scientific | 2022 |
| PFG Investments Ltd | Financial services | 2006 |
| PFR Creative Ltd | Professional & scientific | 2026 |
| PG Club Ltd | Hospitality | 2025 |
| PG Integrity Holdings Limited | Financial services | 2025 |
| PG Integrity Services Limited | Construction | 2022 |