| Penistone GAS Services Ltd | Construction | 2020 |
| Penistone Homes Limited | Other services | 2015 |
| Penistone Logistics Limited | Transport & logistics | 2006 |
| Penistone Motor Group Ltd | Wholesale & retail | 2025 |
| Penistone One Limited | Real estate | 2022 |
| Penistone Paper and Board Limited | Manufacturing | 1972 |
| Penistone Pine & Antiques Ltd | Wholesale & retail | 2003 |
| Penistone TAP and Brewhouse Limited | Manufacturing | 2017 |
| Penistone Tyres Limited | Wholesale & retail | 2010 |
| Penlan Metal Services Limited | Financial services | 2024 |
| Penlaw & Company Limited | Construction | 1977 |
| Penlaw Fixings Limited | Construction | 2015 |
| Penlaw Norfolk Limited | Wholesale & retail | 2004 |
| Penlaw Northwest Limited | Wholesale & retail | 2004 |
| Penn Street Taverns Limited | Hospitality | 2012 |
| Pennar Park Management Limited | Real estate | 2012 |
| Penney Software Ltd | Information & communication | 2021 |
| Pennine Blinds Limited | Wholesale & retail | 2012 |
| Pennine Country Store Limited | Wholesale & retail | 2009 |
| Pennine Electrical Services Ltd | Construction | 2011 |
| Pennine GAS Ltd | Construction | 2021 |
| Pennine Holdings Limited | Information & communication | 2007 |
| Pennine Lubricants Limited | Manufacturing | 1998 |
| Pennine Pet Care Ltd | Professional & scientific | 2024 |
| Pennine Philatelic Limited | Wholesale & retail | 2003 |
| Pennine Security and Property Solutions Limited | Manufacturing | 2012 |
| Pennine Services Training and Development Limited | Other services | 2017 |
| Pennine Store Ltd | Wholesale & retail | 2025 |
| Penny Choice Ltd | Hospitality | 2025 |
| Penny Property Holdings Limited | Real estate | 2025 |
| Pennyplan Ltd | Other services | 2022 |
| Pennywise Cleaners Limited | Households | 2009 |
| Pennywise Commercial Ltd | Households | 2025 |
| Pennywood Forestry Limited | Agriculture & fishing | 2014 |
| Penoak Limited | Hospitality | 2024 |
| Penrith Rackets Ltd | Wholesale & retail | 2025 |
| Penrith Retail Limited | Real estate | 1998 |
| Penrose Products Ltd | Manufacturing | 2006 |
| Pensieve Limited | Financial services | 2023 |
| Pension Lawyers Services Limited | Other services | 2002 |
| Penta Prime Properties Limited | Real estate | 2024 |
| Pentagon Group of Company Ltd | Construction | 2018 |
| Pentel Training & Consultancy Limited | Education | 2024 |
| Pentene Global LLP | | 2024 |
| Pentyre Properties Limited | Real estate | 2007 |
| Peonyra Ltd | Wholesale & retail | 2025 |
| People and Shapes Limited | Arts & recreation | 2015 |
| People for Print Limited | Manufacturing | 2010 |
| People Will Always Need Plates Limited | Wholesale & retail | 2004 |
| People, Planet, Purpose Ltd | Administrative & support | 2018 |
| Peopleoo Limited | Administrative & support | 2023 |
| Peoples Synchrony Ltd | Arts & recreation | 2025 |
| Peoples Tennis CIC | Education | 2024 |
| PEP Workplace Refreshments Limited | Administrative & support | 2017 |
| Pepall Properties Limited | Real estate | 2025 |
| Peper Harow Residents Association Limited | Households | 1999 |
| Peppe's Hair Design & Beauty Ltd | Other services | 2022 |
| Pepper Computing Limited | Administrative & support | 2012 |
| Pepper Greenhouse Limited | Hospitality | 2025 |
| Pepper Medical Ltd | Health & social care | 2021 |
| Peppermint Salon Limited | Other services | 2014 |
| Peracide (UK) Ltd | Wholesale & retail | 2014 |
| Perc UP Ltd | Other services | 2025 |
| Perception Gulf Ltd | Wholesale & retail | 2015 |
| Percivals Events Ltd | Arts & recreation | 2023 |
| Percivals Markets & Events Ltd | Real estate | 2016 |
| Percy & Lily's Ltd | Hospitality | 2017 |
| Percy Street Collective CIC | Manufacturing | 2022 |
| Perdix Offshore Ltd | Professional & scientific | 2025 |
| Peregrine Social Ltd | Information & communication | 2026 |
| Perennial Packaging (UK) Limited | Administrative & support | 2020 |
| Perfect Angles Limited | Health & social care | 2026 |
| Perfect Building Contractor Ltd | Construction | 2021 |
| Perfect Couple Collection Ltd | Wholesale & retail | 2025 |
| Perfect Detail Northern Ltd | Wholesale & retail | 2020 |
| Perfect Finishers Limited | Construction | 2008 |
| Perfect GAS Services Ltd | Construction | 2023 |
| Perfect Holiday Properties Limited | Hospitality | 2025 |
| Perfect Look Exports Limited | Wholesale & retail | 2021 |
| Perfect Peggy Productions Limited | Information & communication | 2022 |
| Perfect Ride Sports Ltd | Professional & scientific | 2013 |
| Perfect Seal Roofing Ltd. | Water & waste | 2012 |
| Perfect Seal Windows and Doors Limited | Construction | 2024 |
| Perfecta Driveways Ltd | Construction | 2019 |
| Perfection Beauty Studio Ltd | Other services | 2023 |
| Perfection Hair Studio Ltd | Other services | 2023 |
| PERFECTION8 Management Ltd | Hospitality | 2018 |
| Perfectionery Limited | Manufacturing | 2013 |
| Perfermento Limited | Manufacturing | 2019 |
| Performance Fitness Coaching Ltd | Arts & recreation | 2026 |
| Performance Health Products Ltd | Other services | 2023 |
| Performing Arts 4 ALL CIC | Education | 2024 |
| Peridot Healthcare Ltd | Real estate | 2024 |
| Perimeter Projects Limited | Wholesale & retail | 2010 |
| Peritia Industrial Engineering Solutions Ltd | Professional & scientific | 2021 |
| Peritus Advisory Services Ltd | Professional & scientific | 2015 |
| Periwood Ltd | Administrative & support | 2025 |
| Perk ME UP Ltd | Hospitality | 2024 |
| Perlemax Limited | Professional & scientific | 2010 |
| Permahold Limited | Administrative & support | 2004 |