| Parc Eirin Development Company Limited | Construction | 2013 |
| Parc Fferm WEN (ST Athan) Management Company Limited | Households | 2021 |
| Parc Play Limited | Financial services | 2013 |
| Parc Taxi Ltd | Transport & logistics | 2025 |
| Parc Y Bryn Management (Pontypridd) Limited | Extraterritorial | 2012 |
| Parcel Fruit Logistics Limited | Transport & logistics | 2017 |
| Parcelbull Limited | Transport & logistics | 2024 |
| Parcelconsulting Ltd | Administrative & support | 2019 |
| Parcels 4 Prisoners Ltd | Wholesale & retail | 2019 |
| Parcks Ltd | Information & communication | 2019 |
| Pardes Group Inc Ltd | Financial services | 2022 |
| Parech Cyfyngedig | Professional & scientific | 2010 |
| Parencare Limited | Extraterritorial | 2020 |
| Parenting Plan Ltd | Health & social care | 2020 |
| Parents Voices in Wales CIC | Health & social care | 2020 |
| Parfitt (Builders) Limited | Real estate | 1945 |
| Parfitt Software Engineering Ltd | Information & communication | 2019 |
| Parfitt Tyre Co. Ltd | Wholesale & retail | 1984 |
| Parfonstella Limited | Other services | 2025 |
| Parimco Backoffice Support Ltd | Professional & scientific | 2020 |
| Paris Logic Ltd | Information & communication | 2025 |
| Parish Caruano Ltd | Real estate | 2025 |
| Parish Property Developments Limited | Real estate | 2005 |
| Pariti Ltd | Professional & scientific | 2025 |
| Park Care Services Ltd | Health & social care | 2020 |
| Park Conservative Club Company(Cardiff)Limited(The) | Other services | 1904 |
| Park Court (Barry) Management Company Limited | Households | 1987 |
| Park Court (Penarth) Limited | Households | 1991 |
| Park END Court Freehold Company Limited | Households | 2009 |
| Park END Court Management Co Limited | Households | 1986 |
| Park Estate Investments Limited | Real estate | 2010 |
| Park House 20 Ltd | Hospitality | 2013 |
| Park Internet Limited | Real estate | 2015 |
| Park Lane Flooring Limited | Construction | 2013 |
| Park Lane London Limited | Real estate | 2015 |
| Park Lane Security Services Limited | | 1989 |
| Park Mansion Management Company Limited | Households | 2018 |
| Park Place Chambers(Cardiff)Limited | Administrative & support | 1967 |
| Park Place Investors (Llanishen) Limited | Real estate | 2016 |
| Park Place Investors Limited | Real estate | 2014 |
| Park Safe Network Ltd | Hospitality | 2026 |
| Park Scene CYF | Hospitality | 2019 |
| Park Street Parking Limited | Extraterritorial | 2017 |
| Park the World Ltd | Wholesale & retail | 2025 |
| Park Tower (Penarth) Limited | Households | 1996 |
| Park View (Greyfriars) Residential Ltd | Real estate | 2015 |
| Park View Apartments (Cardiff) Limited | Households | 2003 |
| Park View Court Management (Cardiff) Limited | Households | 1986 |
| Park View Empire Limited | Construction | 2018 |
| Parkar's Limited | Professional & scientific | 2016 |
| Parkars Properties Ltd | Real estate | 2021 |
| Parkbox Limited | Hospitality | 2005 |
| Parkchoice Properties Ltd | Real estate | 2021 |
| Parkclear Ltd | Information & communication | 2025 |
| Parker CBR Ltd | Real estate | 2023 |
| Parker Flooring Limited | Construction | 2021 |
| Parker Group Limited | Information & communication | 2022 |
| Parker Realisations Limited | Manufacturing | 1986 |
| Parker ST (Mscp) Limited | Real estate | 2020 |
| Parker.Ai Limited | Information & communication | 2021 |
| Parkers Studio Cardiff Ltd | Hospitality | 2026 |
| Parker’S Cardiff Ltd | Hospitality | 2026 |
| Parkgate Hotel Cardiff Limited | Construction | 2019 |
| Parkgrove Developments Limited | Construction | 2008 |
| Parkgrove Property Holding Ltd | Construction | 2024 |
| Parki Limited | Transport & logistics | 2025 |
| Parkingwarden Ltd | Information & communication | 2025 |
| Parkinsonwhite Ltd | Professional & scientific | 2025 |
| Parklands Llanishen (Phase 2) Management Company Limited | Households | 2007 |
| Parklands Plus Ltd | Administrative & support | 2022 |
| Parklane P&C Ltd | Other services | 2018 |
| Parkmore Estate Planning Limited | Professional & scientific | 2018 |
| Parkmore Financial Planning Ltd. | Financial services | 2017 |
| Parkmore Financial Services Limited | Professional & scientific | 2018 |
| Parksgo Ltd | Transport & logistics | 2026 |
| Parkside Court (Cardiff) Management Company Ltd | Households | 2007 |
| Parkside Dental Practice Limited | Health & social care | 2009 |
| Parkston Limited | Wholesale & retail | 2024 |
| Parkstone Residential Limited | Real estate | 2025 |
| Parkview Residential (Swansea) Limited | Health & social care | 2014 |
| Parkway Clinic Limited | Health & social care | 2006 |
| Parkway Wholesale Ltd | Wholesale & retail | 2013 |
| Parkwood Chiropractic Clinic Ltd | Health & social care | 2015 |
| Parlafly Ltd | Information & communication | 2026 |
| Parlak Sports Limited | Wholesale & retail | 2025 |
| Parley Car Centre Ltd | Wholesale & retail | 2025 |
| Parmah Limited | Real estate | 2012 |
| Parminder SINGH1 Ltd | Construction | 2025 |
| Parmo on the Go Ltd | Hospitality | 2026 |
| Parnell Costs Consultancy Limited | Professional & scientific | 2026 |
| Paros Trading Limited | Construction | 2018 |
| Parquet & CIA Ltd | Construction | 2025 |
| Parr Davies Property Limited | Real estate | 2023 |
| Parrys Catering Limited | Hospitality | 2025 |
| Parsian Holding Limited | Financial services | 2026 |
| Parsianbtl Limited | Real estate | 2026 |
| Parsing Experts Ltd | Information & communication | 2025 |
| Parsona Ltd | Wholesale & retail | 2026 |
| Parsons Property Projects Limited | Real estate | 2021 |
| Parsons Ridge Ltd | Agriculture & fishing | 2023 |