| Part of the Journey Limited | Health & social care | 2025 |
| Partenaire Croissance AI Ltd | Professional & scientific | 2025 |
| Partner Academy Ltd | Information & communication | 2023 |
| Partner Seven Limited | Information & communication | 2015 |
| Partneriaid Oleia CYF | Administrative & support | 2023 |
| Partners for Growth Limited | Professional & scientific | 2005 |
| Partners for Growth LLP | | 2005 |
| Partnership Accommodation Development Ltd | Hospitality | 2019 |
| Partnership Business R.E.B.I.I. Ltd | Financial services | 2008 |
| Partnership Holdco Limited | Financial services | 2025 |
| Partnerships for Progress Holdings Limited | Financial services | 2019 |
| Partnerships for Progress Limited | Health & social care | 2016 |
| Partnrz Ltd | Wholesale & retail | 2025 |
| Parton Properties Ltd | Real estate | 2024 |
| Partridge Croft Limited | Information & communication | 2008 |
| Party PUB Swansea Ltd | Hospitality | 2026 |
| Party World Cardiff Limited | Wholesale & retail | 2013 |
| Parus&Sabir Properties Ltd | Real estate | 2025 |
| Parveen Consulting UK Limited | Professional & scientific | 2025 |
| Parveens Ruks Ltd | Wholesale & retail | 2025 |
| Parvenu London Limited | Wholesale & retail | 2022 |
| PAS Landscapes Limited | Administrative & support | 2019 |
| Pas-It Limited | Professional & scientific | 2007 |
| Pasar Mart UK Ltd | Wholesale & retail | 2023 |
| Pascal Lang Ltd | Wholesale & retail | 2018 |
| Pascall Court Freehold Limited | Households | 2013 |
| Pascall Court Management Limited | Households | 1985 |
| Pasha Bar Limited | Administrative & support | 2017 |
| Pasha Breakfast Cafe Ltd | Hospitality | 2023 |
| Pasha Sandwich Bar Limited | Hospitality | 2022 |
| Pasha Shawarma SW Ltd | Hospitality | 2025 |
| Pasha Trade Ltd | Wholesale & retail | 2025 |
| Pashaels Limited | Education | 2012 |
| Pasid Solutions Ltd | Administrative & support | 2020 |
| Pasific Ltd | Wholesale & retail | 2025 |
| Paskali Management CYF | Real estate | 2018 |
| Pasola Recruiting Ltd | Administrative & support | 2020 |
| Pass Systems Limited | Information & communication | 2017 |
| Passenger Films Limited | Information & communication | 2014 |
| Passion for Cruises Ltd | Administrative & support | 2012 |
| Past Goods Limited | Wholesale & retail | 2025 |
| Pasta a Casa Ltd | Hospitality | 2021 |
| Pasta BOI Limited | Manufacturing | 2020 |
| Pastan Limited | Hospitality | 2020 |
| Pastor Motor Repair Service Ltd | Wholesale & retail | 2015 |
| Pastte Ltd | Wholesale & retail | 2024 |
| PAT Cleaning Ltd | Other services | 2017 |
| PAT Group Ltd | Construction | 2018 |
| PAT10 Ltd | Real estate | 2022 |
| Pataphysics Ltd | Information & communication | 2013 |
| Patch Tech Holdings Ltd | Information & communication | 2022 |
| Patea LLP | | 2022 |
| Patea Sailing LLP | | 2026 |
| Patek Transport Limited | Administrative & support | 2025 |
| Patel & Co. Ltd | Hospitality | 2025 |
| Patel Corner Store Limited | Wholesale & retail | 2013 |
| Patel Property Managment Ltd | Real estate | 2025 |
| Patels Property Management Ltd | Real estate | 2015 |
| Patent Explore Ltd | Professional & scientific | 2026 |
| Patenza Ltd | Wholesale & retail | 2025 |
| Paterson James (Cardiff) Limited | Financial services | 2015 |
| Path to Water Ltd | Information & communication | 2025 |
| Pathans Pharma Limited | Wholesale & retail | 2026 |
| Pathfinder Design Ltd | Professional & scientific | 2024 |
| Pathfinder EU Soft Limited | Information & communication | 2025 |
| Pathfinderx Limited | Wholesale & retail | 2025 |
| Pathnexis Ltd | Information & communication | 2026 |
| Pathogen Limited | Hospitality | 2020 |
| Pathradecha Limited | Hospitality | 2024 |
| Pathway Digital Consulting Limited | Information & communication | 2025 |
| Pathway Properties Limited | Real estate | 2023 |
| Pathways Medical Ltd | Wholesale & retail | 2019 |
| Pathways People Solutions Limited | Professional & scientific | 2022 |
| Pathwest Limited | Administrative & support | 2024 |
| Patient Academy UK Ltd | Information & communication | 2020 |
| Patients First Limited | Information & communication | 2020 |
| Patil Meat Wholesalers Ltd | Wholesale & retail | 2025 |
| Patinazor Ltd | Wholesale & retail | 2023 |
| Patio-Life Ltd | Wholesale & retail | 2012 |
| Patios and Paving Cardiff Limited | Construction | 2017 |
| Patoglu Ltd | Wholesale & retail | 2025 |
| Patooza Solutions Ltd | Wholesale & retail | 2021 |
| Patrasc Building Services Ltd | Construction | 2020 |
| Patrick Structures & Construction Limited | Construction | 2020 |
| Patrick&Co Limited | Professional & scientific | 2020 |
| Patrickgt Ltd | Transport & logistics | 2019 |
| Patriot Real Estate Ltd | Real estate | 2025 |
| Patron Circle Security Ltd | Administrative & support | 2025 |
| Patron Network Ltd | Information & communication | 2019 |
| Patron Print Limited | Manufacturing | 2002 |
| Patron Signs & Print Limited | Manufacturing | 2025 |
| Patronus Sports Ltd | Wholesale & retail | 2020 |
| Patrwm Architects LLP | | 2021 |
| Patten Property Ltd | Real estate | 2025 |
| Pattern Drives & Walls Limited | Construction | 2019 |
| Pattern Saas Ltd | Information & communication | 2025 |
| Patterndrives Limited | Manufacturing | 2025 |
| Patternnest Ltd | Wholesale & retail | 2025 |
| Patternzo Ltd | Wholesale & retail | 2025 |
| Patterson Family Group Ltd | Manufacturing | 2020 |