| Pixel Point Studios Ltd | Information & communication | 2024 |
| Pixel Puzzle Properties Ltd | Real estate | 2025 |
| Pixel Root Systems Ltd | Information & communication | 2025 |
| Pixel Squirrel Studios Ltd | Information & communication | 2018 |
| Pixel Track Media Ltd | Professional & scientific | 2020 |
| Pixelcommerce Ltd | Wholesale & retail | 2025 |
| Pixelgenix Limited | Professional & scientific | 2025 |
| Pixelhaven Ltd | Wholesale & retail | 2025 |
| Pixelott Magicmirror Ltd | Professional & scientific | 2019 |
| Pixeloute Design Studio Ltd | Administrative & support | 2016 |
| Pixeltrove Limited | Wholesale & retail | 2025 |
| Pixelverse Limited | Information & communication | 2025 |
| Pixelx Ltd | Administrative & support | 2018 |
| Pixie Spring Brewing Company Limited | Manufacturing | 2012 |
| Pixode Solutions Ltd | Wholesale & retail | 2019 |
| Pixodel Group PC | | 2020 |
| Pixoro Ltd | Education | 2025 |
| Piyale Ltd | Wholesale & retail | 2024 |
| Pizza & Kebab Ltd | Hospitality | 2014 |
| Pizza Best Cardiff Limited | Hospitality | 2023 |
| Pizza Bridge Ltd | Wholesale & retail | 2026 |
| Pizza Group Ltd | Hospitality | 2019 |
| Pizza House Soton Limited | Hospitality | 2019 |
| Pizza Nero Ltd | Hospitality | 2018 |
| Pizza Newyork SW Ltd | Hospitality | 2024 |
| Pizza Room Limited | Hospitality | 2025 |
| Pizzaz Maccesfield Ltd | Hospitality | 2023 |
| Pizzio 2 Ltd | Hospitality | 2022 |
| Pizzio Ltd | Hospitality | 2017 |
| PJ & RP Best Limited | Manufacturing | 2002 |
| PJ Sargent Consulting Limited | Professional & scientific | 2020 |
| Pjalc Ltd | Water & waste | 2014 |
| PJB Consulting Services Ltd | Professional & scientific | 2023 |
| PJC Decorators Limited | Construction | 2018 |
| PJD Aesthetics Ltd | Health & social care | 2024 |
| PJE Legal Limited | Professional & scientific | 2025 |
| PJF Developments Ltd | Real estate | 2019 |
| PJG Recovery (GB) Limited | Financial services | 2005 |
| PJK Electrical Services Limited | Construction | 2013 |
| PJL Pension Consultancy Ltd | Professional & scientific | 2021 |
| PJL Safety Ltd | Professional & scientific | 2025 |
| PJM Capital Limited | Professional & scientific | 2016 |
| PJM Construction Management Limited | Construction | 2010 |
| Pjpj Limited | Real estate | 2014 |
| PJR Developments Limited | Other services | 2002 |
| PJR Property & Investments Ltd | Real estate | 2026 |
| PJR Property Success Ltd | Real estate | 2018 |
| PJS Glass & Glazing Limited | Construction | 2016 |
| PJS Signalling Ltd | Professional & scientific | 2025 |
| Pjss (Bridgend) Limited | Arts & recreation | 2018 |
| PK Buffet Ltd | Hospitality | 2011 |
| PK Builders Limited | Construction | 2014 |
| PK Trading Solutions Ltd | Wholesale & retail | 2025 |
| Pkdn Properties Limited | Real estate | 2019 |
| Pkdsgd Ltd | Manufacturing | 2026 |
| Pkichain Ltd | Information & communication | 2023 |
| PKM199 Limited | Financial services | 2022 |
| Pkmcconsultants Ltd | Professional & scientific | 2023 |
| Pkrd Ltd | Wholesale & retail | 2018 |
| PL Business Group PC | | 2017 |
| PL Commercial Ltd | Wholesale & retail | 2016 |
| PL Union Ltd | Administrative & support | 2018 |
| PL1 Press Limited | Real estate | 2017 |
| PL1 Web Design Ltd | Information & communication | 2016 |
| PL7 Limited | Other services | 2019 |
| Place Consulting Limited | Information & communication | 2024 |
| Places Collection Limited | Information & communication | 2017 |
| Placey Ltd | Information & communication | 2021 |
| Plaiie Pilates Limited | Health & social care | 2025 |
| Plainpower Limited | Real estate | 2001 |
| Plairmoi Limited | Wholesale & retail | 2023 |
| Plan 2 Build Ltd | Construction | 2022 |
| Plan a Consulting Limited | Professional & scientific | 2014 |
| Plan and Property Limited | Real estate | 2022 |
| Plan ATA Ltd | Wholesale & retail | 2020 |
| Plan Blue Limited | Administrative & support | 2010 |
| Plan Furniture Agency Ltd | Wholesale & retail | 2019 |
| Plan-It Design (Wales) Ltd | Professional & scientific | 2012 |
| PLAN2RIDE Ltd | Arts & recreation | 2015 |
| Plandev Ltd | Professional & scientific | 2016 |
| Plane Tree Hospitality Ltd | Hospitality | 2016 |
| Planet 360 Import Export Ltd | Wholesale & retail | 2022 |
| Planet Brands Limited | Wholesale & retail | 2018 |
| Planet First Limited | Professional & scientific | 2013 |
| Planet Pubbs Ltd | Hospitality | 2018 |
| Planet Recruitment Services 6 Ltd | Administrative & support | 2020 |
| Planet Travel Ltd | Administrative & support | 2000 |
| Planet Vape Beer Bargain Ltd | Wholesale & retail | 2017 |
| Planetaria Estate Ltd | Real estate | 2020 |
| Planetarium Technologies Ltd | Information & communication | 2020 |
| Planetearth Services Ltd | Other services | 2019 |
| Planit Entertainment Ltd | Information & communication | 2017 |
| Planit Lifestyle Limited | Financial services | 2006 |
| Plannet Herbal Care Ltd | Wholesale & retail | 2016 |
| Planning AID Wales | Information & communication | 1990 |
| Planning Solutions Group Ltd | Professional & scientific | 2024 |
| Plant & Industrial Equipment Limited | Wholesale & retail | 2011 |
| Plant and POT Limited | Wholesale & retail | 2021 |
| Plant Repair and Services (South Wales) Limited | Arts & recreation | 1951 |
| Plant Y FRO Ltd | Administrative & support | 2021 |