| Pinnacle Property Management (Spalding) Limited | Real estate | 2026 |
| Pinnacle Ventures Group Ltd | Wholesale & retail | 2023 |
| Pinnacleesp Holdings Limited | Professional & scientific | 2009 |
| Pinnacleesp Limited | Administrative & support | 1999 |
| Pinnox Ltd | Construction | 2026 |
| Pintail Business & Financial Consultancy Ltd | Professional & scientific | 2010 |
| Pintail Consultancy Limited | Administrative & support | 2012 |
| Pintail Ltd | Information & communication | 2018 |
| Pintluis Ltd | Administrative & support | 2019 |
| Pioneer Arts Ltd | Information & communication | 2012 |
| Pioneer Goods Ltd | Wholesale & retail | 2025 |
| Pioneer Medicina Limited | Wholesale & retail | 2013 |
| Pioneer Preservations Ltd | Construction | 2022 |
| Pipe Weldline Ltd | Construction | 2015 |
| Pippa C'S Tattooists Ltd | Other services | 2009 |
| Piri Dental Limited | Health & social care | 2022 |
| Pisces Bay Ltd | Hospitality | 2024 |
| PIT Lane Tyres Ltd | Wholesale & retail | 2021 |
| Pit-Air Motors Ltd | Wholesale & retail | 2012 |
| Pitlochry House Limited | Households | 2015 |
| Pitman Press Limited | Professional & scientific | 1984 |
| PIV Engineering Limited | Information & communication | 2011 |
| Pivot Security Limited | Administrative & support | 2018 |
| Pivotal Property Investments Ltd | Administrative & support | 2024 |
| Pixel Maven Ltd | Information & communication | 2021 |
| Pixel Media 360 Ltd | Professional & scientific | 2026 |
| Pixel Peak Digital Ltd | Wholesale & retail | 2024 |
| Pixel Pulse Productions Ltd | Information & communication | 2025 |
| Pixton Planning Solutions Ltd | Administrative & support | 2017 |
| Pizza 2 NC Limited | Hospitality | 2025 |
| Pizza 2 Night (Croydon) Ltd | Hospitality | 2018 |
| Pizza Bros 2023 Ltd | Hospitality | 2023 |
| Pizza City Shirley Ltd | Hospitality | 2024 |
| Pizza Face Pizza Limited | Hospitality | 2009 |
| Pizza Firezza Italian Limited | Hospitality | 2019 |
| Pizza Firezza Limited | Hospitality | 2019 |
| Pizza Kent Limited | Hospitality | 2019 |
| Pizzaface Hove Limited | Hospitality | 2012 |
| Pizzaface Worthing Limited | Hospitality | 2016 |
| Pizzeria AL Forno Croydon Ltd | Hospitality | 2024 |
| PJ Diamond Properties Ltd | Real estate | 2023 |
| PJ Groceries (UK) Ltd | Wholesale & retail | 2014 |
| PJ Miles Trading Limited | Wholesale & retail | 2025 |
| Pj's Community Services Limited | Health & social care | 2011 |
| PJG Group Limited | Manufacturing | 2016 |
| Pjoyce Offshore Limited | Professional & scientific | 2017 |
| PJP Claylands Limited | Real estate | 2021 |
| PJP Design Limited | Professional & scientific | 2014 |
| PJR Mobiles Limited | Wholesale & retail | 2025 |
| PK Khiani Consultants Limited | Wholesale & retail | 2014 |
| PK Management Consultancy UK Limited | Wholesale & retail | 2013 |
| PK Partnership (Consultancy) LLP | | 2019 |
| PK Property Solutions Limited | Extraterritorial | 2015 |
| PK Studios Limited | Professional & scientific | 2023 |
| PKB Retail Enterprises Limited | Wholesale & retail | 2019 |
| PKF Management Limited | Professional & scientific | 2022 |
| PKS (Surrey) Limited | Real estate | 2021 |
| PKS Contractors Ltd | Construction | 2020 |
| Plab-Master Limited | Administrative & support | 1998 |
| Plaistow (Upper) Management Company Limited | Households | 1986 |
| Plan & Parcel Ltd | Wholesale & retail | 2025 |
| Plan a Rentals Ltd | Real estate | 2025 |
| Plan a Strategies Limited | Professional & scientific | 2012 |
| Plan B Projects | Education | 2012 |
| Plan C Property Ltd | Real estate | 2022 |
| Plan Your Entertainment Ltd | Administrative & support | 2016 |
| Plana International Ltd | Information & communication | 2025 |
| Planet Kebab (Mitcham) Ltd | Hospitality | 2007 |
| Planet Kebab Meat Ltd | Hospitality | 2026 |
| Planet Payroll Limited | Professional & scientific | 2023 |
| Planet Pharma Limited | Professional & scientific | 2004 |
| Planet Pizza Purley Ltd | Hospitality | 2019 |
| Planly Ltd | Wholesale & retail | 2024 |
| Planning and Party Wall Specialists Limited | Professional & scientific | 2010 |
| Plans Developments (Surrey) Ltd | Construction | 2015 |
| Plans Developments Limited | Construction | 2014 |
| Plantz Limited | Wholesale & retail | 2001 |
| Plastna UK Ltd | Wholesale & retail | 2020 |
| Plate Full Caribbean Limited | Hospitality | 2025 |
| Platforme International Limited | Wholesale & retail | 2002 |
| Platino Ltd | Wholesale & retail | 1991 |
| Platinum Consultant London Ltd | Wholesale & retail | 2019 |
| Platinum Consultants Limited | Professional & scientific | 2004 |
| Platinum DRY Cleaners Limited | Other services | 2013 |
| Platinum Global Recruitment Ltd | Administrative & support | 2024 |
| Platinum Music Ltd. | Information & communication | 2001 |
| Platinum Power Clean Ltd | Administrative & support | 2022 |
| Platinum Shisha Lounge Ltd | Hospitality | 2019 |
| Platinumcare Property Services Ltd | Construction | 2025 |
| Platt Lane Newsagents Limited | Information & communication | 2003 |
| Play Place Child Care Services Limited | Education | 1999 |
| Play Place INNOV8 Community Interest Company | Education | 2007 |
| Play Place- Transitions Ltd | Administrative & support | 2012 |
| Play Together Limited | Public administration | 2012 |
| Players Limited | Professional & scientific | 2002 |
| Playforte Ltd | Education | 2022 |
| Playful Innovations (Pioneers of FUN) Limited | Professional & scientific | 2007 |
| Playpalz Party and Softplay Centre Ltd | Health & social care | 2020 |
| Plaza Court Ebbsfleet Management Company Limited | Households | 2022 |
| Plaza Letting Services Limited | Real estate | 2000 |