| Pass a Pizza Limited | Hospitality | 1998 |
| Pass-A-Pizza (UK) Limited | Hospitality | 2011 |
| Passa Enterprise Ltd | Real estate | 2025 |
| Passa Holdings Limited | Real estate | 2022 |
| Passainvestments Limited | Hospitality | 2016 |
| Pasumai Import Ltd | Wholesale & retail | 2025 |
| Pasumai International Ltd | Manufacturing | 2024 |
| Patricia Louise Estates Limited | Real estate | 2020 |
| Patrick Estates Limited | Real estate | 2017 |
| Patrick Family Estates Limited | Real estate | 2023 |
| Pavi 2025 Ltd | Real estate | 2025 |
| Pavilion Legal Limited | Administrative & support | 2010 |
| Paxluri Limited | Real estate | 2025 |
| Payasgoassist Ltd | Information & communication | 2023 |
| PB Partners LLP | | 2016 |
| PCI Innovative Chemicals PTY Ltd | Other services | 2017 |
| Pearl Doll Ltd | Other services | 2025 |
| Pendoric Ltd | Real estate | 2024 |
| Pendragon I.F.C. Limited | Financial services | 1999 |
| Pendragon Trinity LLP | | 2010 |
| Pendulum DB Ltd | Construction | 2022 |
| Peninsula Capital Limited | Real estate | 2012 |
| Penton House Management Limited | Households | 2008 |
| Pepper Tree Holding Ltd | Households | 2024 |
| Perambulatory Surgical Services Limited | Health & social care | 2020 |
| Peraspera Consulting Ltd | Financial services | 2011 |
| Perast Paradise Properties Ltd | Real estate | 2020 |
| Percovia Homes Limited | Real estate | 2021 |
| Perfect Taste Ltd | Hospitality | 2025 |
| Perfect Test House Limited | Professional & scientific | 2017 |
| Perpetual Wealth Management Limited | Financial services | 2016 |
| Peter Goslett Limited | Administrative & support | 2010 |
| Peterborough ACR Ltd | Professional & scientific | 2024 |
| Petroff and SON Limited | Construction | 2016 |
| PG Homecare Limited | Construction | 2015 |
| PG Insights Ltd | Professional & scientific | 2003 |
| Pharmetra Ltd | Wholesale & retail | 2025 |
| Phoenix 3D Printing Ltd | Manufacturing | 2023 |
| Phoenix AU Trading Ltd | Information & communication | 2026 |
| Phofection Limited | Hospitality | 2026 |
| PI Tax UK Limited | Professional & scientific | 2015 |
| Piccolo's (SM6) Ltd | Hospitality | 2021 |
| Picheam Limited | Health & social care | 2014 |
| PILATES4LADIES Limited | Other services | 2011 |
| Pinevita Management Company Limited | Real estate | 2023 |
| Pink Infusion Limited | Other services | 2018 |
| Pinkchip Limited | Real estate | 2016 |
| Pinksheep Fulfilment Ltd | Transport & logistics | 2022 |
| Pinksheep Marketing Ltd | Professional & scientific | 2011 |
| Pinnacle Dynamics Ltd | Wholesale & retail | 2024 |
| Pinnacle Rentals Ltd | Real estate | 2016 |
| Pinpoint Electrics Ltd | Construction | 2015 |
| Pintent Limited | Information & communication | 2011 |
| Pinto Village Ltd | Hospitality | 2015 |
| Pintree Ltd | Wholesale & retail | 2024 |
| Pisquared Advisors Limited | Professional & scientific | 2019 |
| Pivot Care Group Limited | Health & social care | 2018 |
| Pixie & Sera Ltd | Professional & scientific | 2019 |
| Pizza City Limited | Hospitality | 2022 |
| PJ Contractors Ltd | Construction | 2026 |
| PL Waterproofing Limited | Construction | 2017 |
| Plan to BID Ltd | Professional & scientific | 2015 |
| Plas ST POL DE Leon (Penarth Marina) Limited | Professional & scientific | 1996 |
| Plasmastrike Ltd | Arts & recreation | 2026 |
| Platinum Homes Construction Ltd | Construction | 2018 |
| Platinum Private Care Ltd | Health & social care | 2023 |
| Platinum Property and Homes Ltd | Real estate | 2015 |
| Platinum XX Comps Ltd | Wholesale & retail | 2025 |
| Play B C Preschool Ltd | Education | 2014 |
| Playbox House Ltd | Arts & recreation | 2023 |
| Playwise Learning CIC | Education | 2018 |
| Plectum Punctum Limited | Information & communication | 2024 |
| PLN Projects Ltd | Construction | 2020 |
| Plumburdrains Limited | Construction | 2017 |
| Plumr Limited | Construction | 2016 |
| PM Futures Limited | Real estate | 2022 |
| Pmcmi Ltd | Financial services | 2018 |
| Pneumatikos Legacy Limited | Hospitality | 2023 |
| Pocket Mike Productions Ltd | Other services | 2022 |
| Point House Ltd | Real estate | 2021 |
| Pokfulam Ltd | Real estate | 2023 |
| Polite.Properties Limited | Real estate | 2018 |
| Polkadots & Blooms Limited | Education | 2010 |
| Polly Leach Limited | Information & communication | 2015 |
| Pollywoodland Ltd | Real estate | 2023 |
| Pologal Ltd | Real estate | 2015 |
| Pomfie Ltd | Wholesale & retail | 2024 |
| Pooja IT Services Ltd | Information & communication | 2021 |
| Pooled Resources & Consultancy Ltd | Professional & scientific | 2013 |
| Popat Enterprises Ltd | Financial services | 2025 |
| Porter's Locksmiths Ltd | Construction | 2016 |
| Porth Resturant Ltd | Hospitality | 2025 |
| Post to Complete Limited | Professional & scientific | 2012 |
| Potters Court (Sutton) Management Company Limited | Households | 2007 |
| Powell House Management Limited | Households | 1979 |
| Power Financial Planning Limited | Professional & scientific | 2021 |
| Powerarms Global Retail Limited | Wholesale & retail | 2024 |
| Powermech Services Limited | Wholesale & retail | 1998 |
| Ppma Forum Limited | Other services | 2025 |
| Ppma Publishing Limited | Information & communication | 1989 |