| PDM & DO Limited | Construction | 2016 |
| PDN Property Ltd | Real estate | 2022 |
| PDQ Works Ltd | Professional & scientific | 2026 |
| PDV Consulting Ltd | Information & communication | 2023 |
| Peace & Harmony Homes Ltd | Real estate | 2021 |
| Peace Financial Limited | Financial services | 2026 |
| Peace Hospice Care | Health & social care | 1991 |
| Peacock Mechanical Services Ltd | Construction | 2022 |
| Peacock Plumbing & Heating Services Ltd | Construction | 2017 |
| Peacock Violet Limited | Financial services | 2021 |
| PEACOCK1 Security Services Ltd | Administrative & support | 2024 |
| Peak Force Limited | Information & communication | 2025 |
| Peak Performance Maintenance Ltd | Construction | 2015 |
| Pear 15 Limited | Information & communication | 2015 |
| Pearce and Smith Home Improvements Ltd | Construction | 2025 |
| Pearl Crown Ltd | Public administration | 2022 |
| Pearl Skin Clinic Ltd | Health & social care | 2026 |
| Pearloak INT Ltd | Professional & scientific | 2025 |
| Pearloak Limited | Professional & scientific | 2017 |
| Peas Recruitment Ltd | Administrative & support | 2009 |
| Peaz.App Ltd | Information & communication | 2023 |
| Pecasa Ltd | Construction | 2017 |
| Pech Autos Limited | Wholesale & retail | 2022 |
| Pedoria Group Limited | Professional & scientific | 2013 |
| Pedro Solutions Limited | Information & communication | 2013 |
| Peeni Limited | Wholesale & retail | 2021 |
| Pegas Group Ltd | Wholesale & retail | 2023 |
| Pegasus Construction Management Limited | Construction | 2016 |
| Pegasus Survey Solutions Ltd | Professional & scientific | 2015 |
| Pegasus TM Solutions Ltd | Public administration | 2025 |
| Peggy PEG LEG Ltd | Professional & scientific | 2025 |
| Pejjit Ltd | Administrative & support | 2017 |
| Peldon Consulting Limited | Information & communication | 2024 |
| Pelek Ltd. | Water & waste | 2017 |
| Pelican Court Management Limited | Households | 2022 |
| Pell Services Ltd | Construction | 2024 |
| Pelosi Productions Limited | Information & communication | 2025 |
| Pemberley House (Hadley Wood) Management Company Limited | Households | 2015 |
| Penarth Tech Ltd | Professional & scientific | 2026 |
| Pencil Work Ltd | Administrative & support | 2018 |
| Penearth Documentation Services Ltd | Information & communication | 2011 |
| Penguin Derby Ltd | Real estate | 2021 |
| Penguin Group Ltd | Financial services | 2020 |
| Penn Consultants Limited | Professional & scientific | 2023 |
| Penn Place Investments Limited | Administrative & support | 2013 |
| Pennine Properties Limited | Real estate | 2002 |
| Pennine Way Limited | Financial services | 1999 |
| Penning's (Leighton Buzzard) Limited | Wholesale & retail | 2004 |
| Penning's (Milton Keynes) Limited | Wholesale & retail | 2014 |
| Penning's (Repair Pods) Ltd | Wholesale & retail | 2014 |
| Penning's Limited | Wholesale & retail | 1995 |
| Penny Court Flats Limited | Real estate | 2013 |
| Pennyvest Technologies Limited | Information & communication | 2024 |
| Pension Infrastructure Limited Partnership | | 2011 |
| Pensionsiq Limited | Financial services | 2014 |
| Peoplecore Ltd | Information & communication | 2026 |
| Pepe's Food Service Ltd | Wholesale & retail | 2009 |
| Pepe's Franchising Limited | Hospitality | 2009 |
| Pepe's Piri Piri Limited | Administrative & support | 2009 |
| Pepette Ltd | Transport & logistics | 2018 |
| Peposhi Builders Limited | Construction | 2017 |
| Pepper Finance Ltd | Professional & scientific | 2024 |
| Peppered Moth Marketing Ltd | Professional & scientific | 2014 |
| Pepperpot Films Limited | Information & communication | 2012 |
| Perantius Services Limited | Information & communication | 2023 |
| Percepvision AI Ltd | Information & communication | 2025 |
| Peregrin Studio Ltd | Professional & scientific | 2021 |
| Perera Healthcare Ltd | Health & social care | 2014 |
| Perfect Blend Ltd | Hospitality | 2019 |
| Perfect Install Ltd | Construction | 2018 |
| Perfect Nailz Ltd | Other services | 2024 |
| Perfect Refurbishment Ltd | Construction | 2014 |
| Perfect Wave Solutions Limited | Information & communication | 2011 |
| Perfection Skill Ltd | Information & communication | 2015 |
| Perform Engineering Services Ltd | Information & communication | 2023 |
| Perfumeshopping.Com Ltd | Wholesale & retail | 1998 |
| Peripatos Limited | Professional & scientific | 1997 |
| Peritia Project & Technical Management Services Limited | Professional & scientific | 2025 |
| Perkins-Smart Consulting Ltd | Information & communication | 2012 |
| Perola Limited | Real estate | 2016 |
| Peronpark Residents Company Limited | Households | 1987 |
| Perry Testing Limited | Construction | 2014 |
| Persey Shipping Ltd. | Other services | 2006 |
| Persona Game Ltd | Manufacturing | 2024 |
| Personable Property Ltd | Real estate | 2017 |
| Personal AI Builder Ltd | Professional & scientific | 2025 |
| Personal Financial Solutions Ltd. | Financial services | 2002 |
| Personal Growth Hub Ltd | Other services | 2026 |
| Personnel Medical Care Limited | Other services | 1995 |
| Persontyle Group Limited | Information & communication | 2016 |
| Perugino Ltd | Wholesale & retail | 2019 |
| Pestech Ltd | Administrative & support | 2019 |
| Pestxpress Ltd | Agriculture & fishing | 2025 |
| Pet Product Consult LLP | | 2024 |
| Petatec Ltd | Information & communication | 2023 |
| Peter Build Design Limited | Construction | 2024 |
| Peter Dell Ltd | Professional & scientific | 2012 |
| Peter M Hale & Co Limited | Professional & scientific | 2010 |
| Peter Martin Direct Ltd | Wholesale & retail | 2018 |
| Peter Melluish Consulting Limited | Information & communication | 2015 |