| PCB Property Consult Ltd | Real estate | 2020 |
| Pclb Ltd | Wholesale & retail | 2025 |
| PCN Direct Ltd | Health & social care | 2023 |
| PCP Properties Management Limited | Real estate | 2021 |
| PD Concept Limited | Transport & logistics | 2017 |
| PD Dairy Ltd | Administrative & support | 2017 |
| Pdefor & Co Limited | Information & communication | 2015 |
| Pdmj Property Limited | Real estate | 2023 |
| PDS Essex Limited | Manufacturing | 2023 |
| PDS Transport and Logistics Ltd | Transport & logistics | 2024 |
| PEA Services Ltd | Information & communication | 2018 |
| Peaches LDN Limited | Hospitality | 2023 |
| Peachey Publishing Services Limited | Information & communication | 2020 |
| Peacock Maintenance Ltd | Construction | 2021 |
| Peak Access Maintenance Solutions Limited | Construction | 2019 |
| Peak Access Properties Ltd | Real estate | 2023 |
| Peak Simplicity Limited | Education | 2016 |
| Pearl & Broom Limited | Administrative & support | 2025 |
| Pearl Business Ltd | Wholesale & retail | 2023 |
| Pearl Lodge Care Home Ltd | Health & social care | 2018 |
| Pearl Serviced Apartments Ltd | Hospitality | 2017 |
| Pearlnur Ltd | Construction | 2025 |
| Peartree Electrical Services Ltd | Construction | 2024 |
| Peat Properties Limited | Real estate | 2023 |
| Pecon Properties Ltd | Real estate | 2012 |
| Ped's Pizza Ltd | Hospitality | 2021 |
| Pedchem Ltd | Financial services | 2019 |
| Peddle Couriers Ltd | Transport & logistics | 2024 |
| Peediya Holdings Limited | Hospitality | 2024 |
| Peenke Ltd | Health & social care | 2021 |
| Peers Health Limited | Health & social care | 2024 |
| Peers Property Group Limited | Real estate | 2026 |
| Peet Naude Play Therapy Services Ltd | Health & social care | 2014 |
| Pegasus Ceilings & Partitions Limited | Construction | 2005 |
| Pehhchaan Ltd | Wholesale & retail | 2020 |
| Peiris Cleaning Solutions Ltd | Administrative & support | 2026 |
| Pejushow Ltd | Health & social care | 2013 |
| Peka Construction Ltd | Construction | 2026 |
| Pellevi Ltd | Wholesale & retail | 2024 |
| Pema-Uk Ltd | Education | 2022 |
| Pembar Garages Limited | Real estate | 1994 |
| Pemberton Global Ltd | Administrative & support | 2013 |
| Pennrose Limited | Financial services | 2025 |
| Pennskill Search Ltd | Administrative & support | 2023 |
| Penny Black Tattoo Parlour Limited | Other services | 2018 |
| Pentad Media Ltd | Information & communication | 2013 |
| Pentagon Plumbing Ltd | Construction | 2023 |
| Pentagon Property Development Ltd | Real estate | 2025 |
| Pentagon Tiling Limited | Construction | 2017 |
| Pentarise Capital Ltd | Administrative & support | 2025 |
| People NOT Paper Ltd | Information & communication | 2018 |
| People Strategy Consulting Ltd | Administrative & support | 2025 |
| Pepa Investments Ltd | Real estate | 2025 |
| Pepabout Ltd | Other services | 2015 |
| Pepaboutmedia Limited | Information & communication | 2014 |
| Pepper Soda Studio Limited | Wholesale & retail | 2021 |
| Peppers and Salt Ltd | Professional & scientific | 2026 |
| Peral Dragon 88 Limited | Administrative & support | 2019 |
| Perception Design LAB. (International) Limited | Professional & scientific | 2015 |
| Perez Properties Ltd | Real estate | 2021 |
| Perfect Clean Services Ltd | Administrative & support | 2021 |
| Perfect Glory Ltd | Construction | 2025 |
| Perfect Points Piercing and Tattoo Studio Limited | Arts & recreation | 2019 |
| Perfect Touch Services Limited | Administrative & support | 2016 |
| Perfecthealthpaths Ltd | Wholesale & retail | 2026 |
| Perficient Building Services Ltd | Construction | 2024 |
| Performance Sports & Finance Limited | Professional & scientific | 2021 |
| Period Care Ltd | Wholesale & retail | 2025 |
| Perkamuk Ltd | Wholesale & retail | 2018 |
| Permoon Ltd | Wholesale & retail | 2015 |
| Personnel Recruitment Solutions Ltd | Administrative & support | 2020 |
| Perspectives Psychological Services Ltd | Health & social care | 2021 |
| Pescaru Ltd | Transport & logistics | 2019 |
| Pet's Vitality Limited | Wholesale & retail | 2025 |
| Petartify Ltd | Construction | 2021 |
| Petcu ALE Ltd | Construction | 2025 |
| Peter Fullman Electrical Services Limited | Construction | 2019 |
| Peter MS Construction Ltd | Construction | 2022 |
| Peter ONI Consults Ltd | Administrative & support | 2022 |
| Peter Transpeed Ltd | Transport & logistics | 2018 |
| Petersfield PO Limited | Wholesale & retail | 2020 |
| Petica Construction Ltd | Construction | 2026 |
| Petits Amours Limited | Wholesale & retail | 2018 |
| Petroconsult Energy Co. (UK) Limited | Education | 1997 |
| Petroconsult Energy LLP | | 2021 |
| Pettits Lane Limited | Hospitality | 2025 |
| Pettits Lane North Convenience Store Limited | Wholesale & retail | 2009 |
| Petuak Company Limited | Administrative & support | 2015 |
| Pfe-Tcg Limited | Wholesale & retail | 2025 |
| PFG242 Ltd | Arts & recreation | 2023 |
| Pfgoods Ltd | Manufacturing | 2026 |
| PG Property Maintenance Limited | Construction | 2016 |
| PG Tax Tips Limited | Professional & scientific | 2025 |
| Pgmm Ltd | Construction | 2018 |
| Phantom Security Limited | Administrative & support | 2017 |
| Pharma Linked UK Ltd | Wholesale & retail | 2024 |
| PHARMA35 Ltd | Health & social care | 2025 |
| Pharmachange Ltd | Health & social care | 2023 |
| Pharmaware Solutions Ltd | Health & social care | 2014 |
| Pharmawithoutspin Ltd | Professional & scientific | 2025 |