| Primegraft Ltd | Wholesale & retail | 2026 |
| Prince & Co Estates Ltd | Construction | 2025 |
| Print Point Group Ltd | Administrative & support | 2012 |
| Prior Rigg Services Limited | Real estate | 2010 |
| Priors Garth Wetheral Limited | Households | 2021 |
| Priory Grange (Wetheral) Management Company Limited | Real estate | 2018 |
| Priory Knitwear Limited | Extraterritorial | 1993 |
| Priory View (Finchale) Management Company Limited | Real estate | 2019 |
| Pristine Pro Cleans Ltd | Administrative & support | 2026 |
| PRL Developments Limited | Real estate | 2022 |
| PRM Jointing Limited | Construction | 2015 |
| Pro Clean (Cumbria) Ltd | Administrative & support | 2018 |
| Pro Flow Seamless Gutters Ltd | Construction | 2025 |
| Pro Groundworks Cumbria Ltd | Construction | 2024 |
| Pro TUB Limited | Arts & recreation | 2015 |
| Pro Turf Leisure Limited | Arts & recreation | 2024 |
| Pro Turf Machinery Limited | Administrative & support | 2020 |
| Pro-Tec Systems (Cumbria) Limited | Administrative & support | 2009 |
| Pro-Tect Professional Solutions (UK) Limited | Administrative & support | 2021 |
| Pro-Tect UK Security & Training Limited | Administrative & support | 2007 |
| Process Alchemy Ltd | Information & communication | 2025 |
| Process Consulting Group Ltd | Professional & scientific | 2026 |
| Procsol Limited | Construction | 2024 |
| Professional Darts Players Association Ltd | Other services | 1986 |
| Professional Probate Services Limited | Professional & scientific | 2009 |
| Professional Training Solutions (Cumbria) Limited | Education | 2025 |
| Progleam Cleaning & Maintenance Ltd | Administrative & support | 2024 |
| Programmable Logic Controller Solutions Limited | Information & communication | 2013 |
| Progress Controls Limited | Construction | 2007 |
| Project One Indoor Skatepark Ltd | Arts & recreation | 2019 |
| Proline ECU Remapping Limited | Wholesale & retail | 2019 |
| Proline Tuning Limited | Wholesale & retail | 2024 |
| Prolink Security & Electrical Limited | Administrative & support | 2014 |
| Prologik Ltd | Information & communication | 2019 |
| Promm Property Ltd | Real estate | 2013 |
| Promoting Autonomy and Change Ltd | Health & social care | 1984 |
| Property @ Cumbria Limited | Real estate | 2023 |
| Property in Motion Ltd | Real estate | 2021 |
| Property Investor Partners Ltd | Extraterritorial | 2016 |
| Prospect Home Services Ltd | Real estate | 2025 |
| Prospect Woodland Services Ltd | Agriculture & fishing | 2022 |
| Protectiv Limited | Professional & scientific | 2023 |
| Protility Services Ltd | Construction | 2022 |
| Proudlock International Transport Ltd | Transport & logistics | 2025 |
| Provia Properties Limited | Real estate | 2025 |
| Pryor & Rickett Silviculture Ltd. | Agriculture & fishing | 1998 |
| PS Driving Limited | Transport & logistics | 2016 |
| PSG Plumbing & Heating (Cumbria) Limited | Construction | 2020 |
| Pssc Ltd | Hospitality | 2021 |
| Ptfs Cumbria Limited | Extraterritorial | 2008 |
| PTL Services Limited | Extraterritorial | 2022 |
| Ptsf Holdings Ltd | Wholesale & retail | 2018 |
| Pubs and Inns Ltd | Hospitality | 2022 |
| Puma Solutions IT Consultancy Limited | Information & communication | 2012 |
| Pump House (Property) Ltd | Households | 2024 |
| Pupscan International Ltd | Professional & scientific | 2024 |
| Purdham and Waugh Ltd | Construction | 2011 |
| Pure Abodes Serviced Accommodation Ltd | Hospitality | 2018 |
| Pure Personal Training Limited | Arts & recreation | 2004 |
| Pure+Sure Ltd | Wholesale & retail | 2025 |
| Pureglow Cleaning Services Limited | Administrative & support | 2025 |
| Purple Living Limited | Administrative & support | 2021 |
| Purple Places Limited | Construction | 2018 |
| Push High Distance Limited | Health & social care | 2011 |
| Puzzle Retail Stores Limited | Administrative & support | 2017 |
| QCD Automotive Limited | Manufacturing | 2014 |
| QG Business Solutions Ltd | Professional & scientific | 2006 |
| QHP (Europe) Ltd | Manufacturing | 2017 |
| QM Capital Partners Limited | Financial services | 2017 |
| QS Commercial Services Limited | Professional & scientific | 2013 |
| Qscm Limited | Professional & scientific | 2013 |
| Quadrent Solutions Limited | Professional & scientific | 2025 |
| Quality Pizza (Cumbria) Limited | Hospitality | 2019 |
| Quality Pizza Limited | Hospitality | 2024 |
| Quality Stitches of Carlisle Limited | Other services | 2008 |
| Quality Stitches of Cumbria Ltd | Other services | 2026 |
| Quantum Healthcare Limited | Health & social care | 2017 |
| Queer Cumbria CIC | Arts & recreation | 2023 |
| Quentin Park (Cumwhinton) Management Company Limited | Households | 2019 |
| Quick Stix Logistix Ltd | Transport & logistics | 2025 |
| Quidinish (Cuidhtinis) Loch View Holidays Limited | Hospitality | 2020 |
| Quill Consulting Services Ltd | Professional & scientific | 2021 |
| Quinn Solutions Ltd | Professional & scientific | 2024 |
| R & H Lettings Ltd | Real estate | 2024 |
| R & L Taxis Ltd | Transport & logistics | 2024 |
| R a & E J Harrison Limited | Wholesale & retail | 2015 |
| R C Williams Groundworks Ltd | Construction | 2024 |
| R F Angus Limited | Administrative & support | 2003 |
| R Graham Building & Groundwork Limited | Construction | 2026 |
| R H & J C Percival Limited | Agriculture & fishing | 2014 |
| R Hedley Groundworks Limited | Construction | 2024 |
| R J & J L Bostock Limited | Agriculture & fishing | 2004 |
| R K H Autos T/A Ushers Garage Limited | Wholesale & retail | 2021 |
| R M & T a Fisher Limited | Construction | 2020 |
| R of W Ltd | Wholesale & retail | 2011 |
| R Russell Car Sales Limited | Wholesale & retail | 2008 |
| R S Byers Engineering Limited | Manufacturing | 2018 |
| R Stevens Cumbria Steel Ltd | Wholesale & retail | 2011 |
| R Thwaites Ltd | Hospitality | 2016 |
| R&H Bros Limited | Real estate | 2025 |