| Perfect PAL Healthcare Ltd | Health & social care | 2020 |
| Perfect Pictures Ltd | Information & communication | 2019 |
| Perfect Plumbing Services Limited | Wholesale & retail | 2006 |
| Perfect Services London Limited | Other services | 2014 |
| Perfect Spice Limited | Extraterritorial | 2009 |
| Perfectbooks Consulting Limited | Professional & scientific | 2019 |
| Perfection Payroll Ltd | Professional & scientific | 2025 |
| Perfectmotion Ltd | Information & communication | 2010 |
| Perfectum Ltd | Information & communication | 2005 |
| Perfex Properties Ltd | Real estate | 2026 |
| Perfex Solutions Ltd | Information & communication | 2023 |
| Perfit International Trading Company Limited | Wholesale & retail | 2024 |
| Performa.Capital | Professional & scientific | 2025 |
| Performance & Automation Consultancy Ltd | Information & communication | 2014 |
| Performance & Engineering Limited | Wholesale & retail | 2018 |
| Performance Cars Group Limited | Wholesale & retail | 2020 |
| Performance Cars Wales Limited | Wholesale & retail | 2008 |
| Performance Carz. Ltd | Wholesale & retail | 2019 |
| Performance Drives & Landscaping Limited | Construction | 2026 |
| Performance Potential Back in Action Limited | Health & social care | 2007 |
| Performance Security Solution Limited | Administrative & support | 2017 |
| Performing High Limited | Wholesale & retail | 2024 |
| Performing Projects Ltd | Professional & scientific | 2014 |
| Perfumery by Benim Perfumes Ltd | Wholesale & retail | 2024 |
| Peri Peri Delight Limited | Hospitality | 2015 |
| Peridot Consulting International LLP | | 2017 |
| Peridot Energy Consultants Limited | Mining & quarrying | 2017 |
| Perignon 2 Limited | Real estate | 2022 |
| Perilicious Cardiff Ltd | Hospitality | 2025 |
| Perimeter Surveillance Ltd | Administrative & support | 2020 |
| Perimeter Surveillance Maintenance Services Ltd | Administrative & support | 2022 |
| Perimin Property Management Ltd | Real estate | 2019 |
| Perinxo Ltd | Wholesale & retail | 2026 |
| Periodt Ltd | Wholesale & retail | 2025 |
| Peritia Consultants Ltd | Information & communication | 2013 |
| Perivale Services Limited | Administrative & support | 2017 |
| Perkins Properties (Cardiff) Ltd | Real estate | 2024 |
| Perkins Waste Limited | Water & waste | 2021 |
| Perkus Green Trading Ltd | Wholesale & retail | 2025 |
| Perlon Properties Limited | | 1984 |
| Permacos PMU Limited | Other services | 2024 |
| Permanent People Limited | Administrative & support | 2013 |
| Permatech Exterior Coatings Ltd | Construction | 2024 |
| Permitted Developments Investments NO 15 Limited | Real estate | 2020 |
| Permitted Developments Investments NO 20 Limited | Real estate | 2020 |
| Permitted Developments Investments NO 7 Ltd | Real estate | 2017 |
| Pern Ventures Limited | Real estate | 2021 |
| Perok Alliance LLP | | 2009 |
| Perpetual Sunrise Ltd | Other services | 2014 |
| Perrie Ponte Ltd | Other services | 2019 |
| Perrin Contractor Services Limited | Other services | 2016 |
| Perry Acquisition Ltd | Real estate | 2026 |
| Perry Boutique Ltd | Wholesale & retail | 2019 |
| Perryrow Limited | Hospitality | 2018 |
| Perrytech Technologies Limited | Information & communication | 2025 |
| Perry’S Maintenance & DIY Ltd | Construction | 2022 |
| Persecall Limited | Transport & logistics | 2017 |
| Persian Night Ltd | Hospitality | 2026 |
| Persona AI Limited | Information & communication | 2024 |
| Persona Kitchens Ltd | Manufacturing | 2024 |
| Personal Agency Limited | Other services | 2019 |
| Personal Data Management Limited | Information & communication | 2018 |
| Personalised Designed Spaces Ltd | Information & communication | 2024 |
| Personnel Link Employment Group Payroll Ltd | Administrative & support | 2021 |
| Perspective Properties Ltd | Real estate | 2015 |
| Perspica Ltd | Information & communication | 2003 |
| Pertoda Services Ltd | Administrative & support | 2022 |
| Pertuce Limited | Financial services | 1959 |
| Pesby Relocations (UK) Ltd | Other services | 2019 |
| Pesco Health Care Ltd | Public administration | 2018 |
| Peslac Ltd | Information & communication | 2024 |
| Pesmerala Services Ltd | Wholesale & retail | 2021 |
| Pessaco Limited | Wholesale & retail | 2018 |
| Pest Expert Consortium Ltd | Administrative & support | 2022 |
| Pest Protection Limited | Administrative & support | 2024 |
| Pesticcio Capital Ltd | Financial services | 2025 |
| Pesticcio Enterprise Limited | Financial services | 2025 |
| Pesticcio Plumbing and Heating Ltd | Construction | 2025 |
| Pesticcio Steel Co Ltd | Manufacturing | 2024 |
| Pests Solution Ltd | Agriculture & fishing | 2022 |
| Pet and Personal Services Ltd | Other services | 2021 |
| Petal & Paper Sentiments Ltd | Wholesale & retail | 2026 |
| Petal&Pop Ltd | Administrative & support | 2026 |
| Petalio Ltd | Wholesale & retail | 2024 |
| Petaverse Australia PTY. Ltd | Wholesale & retail | 2026 |
| Petbites Ltd | Wholesale & retail | 2025 |
| Petcareai Ltd | Wholesale & retail | 2026 |
| Pete Murray Ltd | Health & social care | 2007 |
| Peter Christian Limited | Wholesale & retail | 2025 |
| Peter D. Lewis Limited | Professional & scientific | 1995 |
| Peter Dewland Consulting Limited | Health & social care | 2008 |
| Peter Gill & Associates Limited | Professional & scientific | 1981 |
| Peter Johnston & Company (South Shields) Limited | Professional & scientific | 1950 |
| Peter Oldfield Ltd | Wholesale & retail | 2012 |
| Peter Proctor (Builders) Limited | | 1960 |
| Peter Reynolds (Acorns) Limited | Real estate | 2017 |
| Peter Reynolds Holdings Limited | Financial services | 2025 |
| Peter Reynolds LLP | | 2007 |
| Peter Reynolds Properties Limited | Real estate | 2017 |
| Peter Spence Consulting Ltd | Construction | 2016 |