| Pole-Zero Ltd | Professional & scientific | 2014 |
| Polestar Accountancy Limited | Extraterritorial | 2025 |
| Polestar Foundation Limited | Other services | 2003 |
| Polfix Facades Ltd | Construction | 2023 |
| Polish Away Cleaning Services Ltd | Administrative & support | 2024 |
| Politech Automotive Limited | Wholesale & retail | 2016 |
| Pollie Heating Solutions Ltd | Construction | 2022 |
| Pollitt Trading Ltd | Wholesale & retail | 2021 |
| Pollorosso Advisors Limited | Professional & scientific | 2015 |
| Polly and Team Cleaning Ltd | Administrative & support | 2017 |
| Polly and Team Ltd | Administrative & support | 2018 |
| Polly Rahman Consulting Ltd | Professional & scientific | 2020 |
| Polly's Poppadoms | Hospitality | 2018 |
| Pollys Place Ltd | Hospitality | 2026 |
| Polo by Post Ltd | Wholesale & retail | 2025 |
| Polvellan Ltd | Real estate | 2003 |
| Poly Advisory Services Limited | Construction | 1978 |
| Poly Graphics Limited | Professional & scientific | 2020 |
| Polygrid Limited | Professional & scientific | 2023 |
| Polymer Recovery UK Ltd | Water & waste | 2017 |
| Polyphonic Entertainment Limited | Administrative & support | 2024 |
| Polytelis Property Limited | Real estate | 2017 |
| Polyverba Ltd | Professional & scientific | 2019 |
| Polyverse Ltd | Professional & scientific | 2008 |
| POM Security Limited | Administrative & support | 2015 |
| Pomegranate One Ltd | Real estate | 2017 |
| Pomegranate Two Ltd | Real estate | 2019 |
| Pomodoro & Basilico Ltd | Hospitality | 2019 |
| Pomodoro Verde Ltd | Hospitality | 2025 |
| Poncho Consultancy Ltd | Education | 2019 |
| Pondhills Limited | Health & social care | 2004 |
| Ponkers Ltd | Wholesale & retail | 2021 |
| Ponno-Drobbo Online Ltd | Wholesale & retail | 2025 |
| Pontefax Investments Ltd | Real estate | 2025 |
| Pontefax Limited | Real estate | 2015 |
| Pontes Enterprises Ltd | Arts & recreation | 2021 |
| Pontirion Limited | Information & communication | 2004 |
| POO Health Limited | Health & social care | 2023 |
| Pooch N Pups Ltd | Wholesale & retail | 2025 |
| Pooja & Jonah Ltd | Health & social care | 2013 |
| Pooja Properties Ltd | Households | 2020 |
| Pooka Pubs Limited | Hospitality | 2017 |
| Pool Seal Limited | Manufacturing | 2010 |
| Poole Associates Limited | Professional & scientific | 2012 |
| Poole Builders Limited | Construction | 2003 |
| Poolview Limited | Manufacturing | 2012 |
| POP ARK Limited | Professional & scientific | 2005 |
| POP Bang WOW Limited | Administrative & support | 2016 |
| POP Club Vintage Ltd | Wholesale & retail | 2018 |
| POP Digital Limited | Professional & scientific | 2012 |
| POP Shop Collaborative Ltd | Hospitality | 2020 |
| POP UP Party UK Limited | Other services | 2016 |
| Pop'N'Chop Ltd | Hospitality | 2019 |
| POP, Paint and Personalise Ltd | Professional & scientific | 2025 |
| Pope & Parr Limited | Extraterritorial | 2010 |
| Poplar Lettings Limited | Real estate | 2017 |
| Poplar Paws Limited | Other services | 2024 |
| Poplars Blossoms Nursery School Limited | Education | 2005 |
| Poplars Flats Management (Nottingham) Co. Limited (the) | Households | 1972 |
| Poppies Care Services Ltd | Other services | 2022 |
| Poppy and Ellie Ltd | Professional & scientific | 2025 |
| Poppy' S Home Care Services Ltd | Health & social care | 2018 |
| Pops Enterprises Limited | Financial services | 2023 |
| Pops Sweet and Spicy Ltd | Hospitality | 2025 |
| Population Homes (Lordship RD) Ltd | Real estate | 2018 |
| Popwave Ltd | Professional & scientific | 2013 |
| Porchester Court Management Company Limited | Administrative & support | 2006 |
| Porchester DPF Clean UK Limited | Wholesale & retail | 2024 |
| Porchester Holdings Limited | Real estate | 1996 |
| Porchester Property Limited | Real estate | 2020 |
| Porchlight Properties Ltd | Real estate | 2021 |
| Porcus TC Limited | Professional & scientific | 2025 |
| Pork Farms Caspian Limited | Manufacturing | 2014 |
| Pork Farms Limited | Manufacturing | 2006 |
| Porky's Cobs Ltd | Hospitality | 2022 |
| Porky's Ltd | Hospitality | 2019 |
| Porky's Properties Ltd | Real estate | 2017 |
| Porsche Consulting Ltd | Information & communication | 2020 |
| Port Charlotte Projects Limited | Real estate | 1994 |
| Port Phillip Consulting Limited | Professional & scientific | 2021 |
| Portas Global Limited | Administrative & support | 2018 |
| Portech Performance Ltd | Wholesale & retail | 2014 |
| Porterhouse (by Barlows) Limited | Hospitality | 2016 |
| Portfolio Launch Ltd | Construction | 2019 |
| Portforge Limited | Real estate | 1977 |
| Portland Bishop (Nottingham) Limited | Construction | 1934 |
| Portland Property Group Limited | Professional & scientific | 2016 |
| Portman Air Conditioning Holdco Limited | Construction | 2025 |
| Portman Air Conditioning Holdings Limited | Construction | 2025 |
| Porto Frailis Ventures Limited | Real estate | 2010 |
| Portside Services Ltd | Transport & logistics | 2024 |
| Portway Associates Ltd | Information & communication | 2024 |
| Posh Flair Ltd | Wholesale & retail | 2021 |
| Posh Nosh (East Midlands) Limited | Hospitality | 2002 |
| Posh Services Limited | Arts & recreation | 2003 |
| POSITION4GROWTH Limited | Professional & scientific | 2022 |
| Positive Attitude and Education CIC | Education | 2019 |
| Positive Change to Parenting Ltd | Education | 2024 |
| Positive Connections Electrical Ltd | Construction | 2019 |
| Positive Healthy Vibes | Other services | 2022 |