| Place UK Limited | Agriculture & fishing | 2001 |
| PLACE2PLACE UK Ltd | Transport & logistics | 2017 |
| Plad Lettings Limited | Real estate | 2026 |
| Plain Speaking PR Limited | Professional & scientific | 2008 |
| Plan 4 Analytics Limited | Administrative & support | 2024 |
| Plan B Strategy Ltd | Information & communication | 2025 |
| Plan for IT! Holdings Limited | Financial services | 2020 |
| Plan for IT! Property Limited | Construction | 2020 |
| Plandescil Trustees Limited | Professional & scientific | 2016 |
| Plane Sailing Carpentry Ltd | Manufacturing | 2024 |
| Planet Angel Events Ltd | Arts & recreation | 2018 |
| Planet Caravan Services Limited | Wholesale & retail | 2021 |
| Planet Education Limited | Education | 2015 |
| Planet JN Limited | Wholesale & retail | 2018 |
| Planet Laser Limited | Arts & recreation | 2013 |
| Planet Tribal Ltd | Wholesale & retail | 2025 |
| Planit Financial Limited | Financial services | 2024 |
| Planit Wills & Estates Limited | Professional & scientific | 2026 |
| Plannerday Ltd | Information & communication | 2026 |
| Planning Consulting Limited | Professional & scientific | 2019 |
| Planpros Tech Ltd | Construction | 2024 |
| Plant Healthy Limited | Professional & scientific | 2020 |
| Plant Intelligence Ltd | Professional & scientific | 2023 |
| Planted Norwich Ltd | Wholesale & retail | 2021 |
| Plantscape Exterior Limited | Administrative & support | 2002 |
| Plantscape Interior Limited | Administrative & support | 1984 |
| Plantscape Ltd | Administrative & support | 2025 |
| Plast Equip Ltd | Wholesale & retail | 2021 |
| Plaster Pros Norfolk Limited | Construction | 2024 |
| Platform OD & Coaching Ltd | Administrative & support | 2020 |
| Platform Ticket Ltd | Information & communication | 2011 |
| Platinum Build Norfolk Ltd | Construction | 2026 |
| Platinum Business Systems Limited | Information & communication | 2010 |
| Platinum Capital Management Limited | Financial services | 1999 |
| Platinum Portfolio Builder Limited | Real estate | 2009 |
| Platinum Sounds Events & Promotions Limited | Information & communication | 2021 |
| Platinum Sounds Ltd | Manufacturing | 2013 |
| Platten Pest Control Ltd | Administrative & support | 2015 |
| Plattens Court Apartments Management Company Limited | Real estate | 1992 |
| Player Washington Group Ltd | Construction | 2019 |
| Playful Pathways CIC | Health & social care | 2026 |
| Playkawaii Ltd | Wholesale & retail | 2024 |
| Playout Systems Limited | Information & communication | 2008 |
| Playpen Limited | Information & communication | 2024 |
| PLB Property Investment Ltd | Real estate | 2024 |
| PLC Green Coffee Ltd | Wholesale & retail | 2025 |
| Pldts International Carrier Ltd | Information & communication | 2015 |
| Pleasant Group Ltd | Wholesale & retail | 2025 |
| Pledger Pharmacy Limited | Wholesale & retail | 1996 |
| Plenty Sense Limited | Agriculture & fishing | 2023 |
| Plenty Studio Works Ltd | Information & communication | 2026 |
| Plexa Ltd | Administrative & support | 2020 |
| Ploutos Wealth Management Ltd | Financial services | 2018 |
| Plsc Consulting Limited | Professional & scientific | 2017 |
| Pltx Ltd | Administrative & support | 2023 |
| Plug Studios Limited | Arts & recreation | 2019 |
| Plug the GAP Services CIC | Information & communication | 2022 |
| Plumb All-Sorts Limited | Construction | 2025 |
| Plumbing AID Limited | Construction | 2024 |
| Plumstead Farms Limited | Agriculture & fishing | 1997 |
| Plumstead Mini Mart Ltd | Wholesale & retail | 2020 |
| Plumstead Pizza Ltd | Hospitality | 2025 |
| Plunkett & Murrey Limited | Administrative & support | 2008 |
| Plus MED Ltd | Health & social care | 2026 |
| Plus Payroll Ltd | Administrative & support | 2022 |
| Plus Point Computers Ltd | Wholesale & retail | 2018 |
| Plus US Marketing Limited | Professional & scientific | 2021 |
| Plush Tiling Ltd | Construction | 2025 |
| PLY Light Furniture Boards Ltd | Manufacturing | 2018 |
| PLY Limited | Information & communication | 2020 |
| Plymouth Karting Ltd. | Arts & recreation | 2018 |
| Plymouth Trawler Agents Limited | Wholesale & retail | 1994 |
| PM Motor Engineering Ltd | Wholesale & retail | 2023 |
| PM Noble Homes Ltd | Construction | 2025 |
| PM Norfolk Limited | Real estate | 2018 |
| PM Power Engineering Ltd | Construction | 2015 |
| PM Wright Investments Ltd | Financial services | 2021 |
| PM Wright Ltd | Real estate | 2021 |
| PMM Property Limited | Real estate | 2019 |
| PMW Engineering Services Limited | Construction | 2016 |
| PNB Norwich Ltd | Other services | 2017 |
| PNF Services Limited | Manufacturing | 2011 |
| PNG Professionals Limited | Professional & scientific | 2014 |
| PNJ Aviation Consulting Ltd | Professional & scientific | 2018 |
| POC Ventures Ltd | Administrative & support | 2013 |
| Pocket Media Group Limited | Information & communication | 2016 |
| Pocket Packet Limited | Wholesale & retail | 2025 |
| Pocketful (Leftover) Limited | Professional & scientific | 2025 |
| Pockthorpe Limited | Real estate | 2023 |
| Poda MED Limited | Health & social care | 2025 |
| Podcast Plus Ltd | Manufacturing | 2020 |
| Podium Position Ltd | Administrative & support | 2020 |
| Poetscorner Entertainment Limited | Other services | 2015 |
| Point Nemo Ltd | Information & communication | 2025 |
| Point Roofing Limited | Construction | 2021 |
| Point Site Services Ltd | Construction | 2018 |
| Pointed Pixel Ltd | Information & communication | 2013 |
| Pointond Software Limited | Information & communication | 2025 |
| Pointtwofive Limited | Professional & scientific | 2013 |
| Pokefamilytcg Limited | Wholesale & retail | 2024 |