| Leadmill Trout Farm Limited | Agriculture & fishing | 2003 |
| LEAN3D Ltd | Administrative & support | 2019 |
| Lexton Properties Ltd | Construction | 2014 |
| Lindley Educational Trust Limited | Education | 1965 |
| Linked Commercial Services Limited | Hospitality | 2010 |
| Little Bear Bridal Ltd | Wholesale & retail | 2018 |
| Living Stone Climbing Walls Limited | Construction | 1992 |
| Looby Loos Nursery Limited | Education | 2021 |
| Lovers Leap Garage Limited | Wholesale & retail | 2024 |
| Lyndon DE Burgh Limited | Professional & scientific | 2023 |
| Lynne Marion Limited | Real estate | 2023 |
| M J Hughes Psychological Assessments Limited | Health & social care | 2022 |
| M Spencer Plumbing & Heating Ltd | Construction | 2016 |
| Maazi NO 2 Limited | Hospitality | 2010 |
| Maccanet Ltd | Information & communication | 2020 |
| Magic Wood Ltd | Manufacturing | 2022 |
| Maincare Roofing & Building Ltd | Construction | 2011 |
| Manor House Hotel Limited | Hospitality | 2006 |
| Marika Walker Nutrition Limited | Health & social care | 2026 |
| Mark Hadfield Joinery & Renovation Limited | Manufacturing | 2015 |
| Marsh Farm Development Company Limited | Real estate | 1994 |
| Mash Production Limited | Information & communication | 2004 |
| Matthew George Keeley Holdings Limited | Professional & scientific | 2024 |
| Medico Legal Diagnostics Limited | Professional & scientific | 2017 |
| Merseybank Nursery Limited | Education | 2015 |
| Met-Spar UK Limited | Mining & quarrying | 2012 |
| Michael Baron Consulting Ltd | Information & communication | 2024 |
| Middleton Rental Management Ltd | Real estate | 2022 |
| Miltons Head (Buxton) Limited | Hospitality | 2019 |
| Mistral Associates Limited | Professional & scientific | 2015 |
| Mjem Ltd | Construction | 2024 |
| Modular Solar Technologies Limited | Manufacturing | 2022 |
| Morgan & Butler Limited | Wholesale & retail | 2014 |
| Morrissy Legal (Construction) Limited | Professional & scientific | 2023 |
| Mountain House Holidays Limited | Professional & scientific | 2005 |
| Mowbray (Sheffield) Limited | Real estate | 1966 |
| Mucho Padel Limited | Arts & recreation | 2025 |
| Munication Limited | Information & communication | 1984 |
| Music Scribbler Ltd | Extraterritorial | 2013 |
| N.I.A.T Media Ltd | Information & communication | 2016 |
| Natural Earth Products Limited | Other services | 2004 |
| NEC EOT Limited | Manufacturing | 2021 |
| Nemushealth Limited | Administrative & support | 2010 |
| Network Event Assets Ltd | Manufacturing | 2010 |
| Newburgh Engineering Co Limited | Manufacturing | 2009 |
| Newcott Training Limited | Arts & recreation | 2021 |
| Newfold Farm Ltd | Hospitality | 2020 |
| Nobullproperties Ltd | Real estate | 2020 |
| Old Hall Hotel (Hope) Limited | Hospitality | 2017 |
| Orlestone House Management Limited | Households | 2016 |
| Outside Holdings Limited | Wholesale & retail | 1986 |
| Outside Limited | Wholesale & retail | 2007 |
| Ovayonda Limited | Wholesale & retail | 2022 |
| Owen Land & Property Limited | Professional & scientific | 2015 |
| Padley Mews Management Limited | Households | 2018 |
| Paediatric Gastro UK LLP | | 2012 |
| Paeds Gastro UK Ltd | Health & social care | 2019 |
| Pandy Holidays Ltd | Hospitality | 2025 |
| Parkhead Cottage Nursery Limited | Education | 2010 |
| Peak Adventure Base Ltd | Hospitality | 2025 |
| Peak Cloud Solutions Ltd | Information & communication | 2025 |
| Peak Construction Services Limited | Professional & scientific | 2020 |
| Peak District Vehicles Ltd | Wholesale & retail | 2011 |
| Peak Edge Solutions Ltd | Information & communication | 2026 |
| Peak Forest Construction Ltd | Construction | 2018 |
| Peak Fruits Ltd | Wholesale & retail | 2023 |
| Peak Geoscience Limited | Professional & scientific | 2022 |
| Peak Health Group Ltd | Other services | 2025 |
| Peak Homes Limited | Administrative & support | 2019 |
| Peak Hospitality Ltd | Hospitality | 2023 |
| Peak Human Performance Ltd | Health & social care | 2026 |
| Peak Medicolegal Services Ltd | Health & social care | 2019 |
| Peak Medtek Ltd | Manufacturing | 2019 |
| Peak Motorcycles Limited | Wholesale & retail | 2025 |
| Peak Physio and Injection LLP | | 2024 |
| Peak Social Ltd | Professional & scientific | 2016 |
| Peakstone Recycling Ltd | Extraterritorial | 2011 |
| Peaksweep Limited | Water & waste | 2013 |
| Pell Nolan Holdings Ltd | Financial services | 2026 |
| Pennine Woodworking Limited | Manufacturing | 2004 |
| Pentagon Development Group Limited | Real estate | 2024 |
| Peregrin Limited | Professional & scientific | 2017 |
| Peter Leppard Ltd | Transport & logistics | 2013 |
| Peter Slater Sports Media Limited | Information & communication | 2012 |
| Phillip Brennan Design Ltd | Professional & scientific | 2023 |
| Phrezmazome Limited | Wholesale & retail | 2022 |
| PIA Simonsen Ltd | Real estate | 2013 |
| Pippa Grange Ltd | Professional & scientific | 2020 |
| PJD Financial Management Limited | Professional & scientific | 2023 |
| Plumbing Geeks Ltd | Construction | 2016 |
| Polar Freeze Limited | Wholesale & retail | 2002 |
| Portaway Farms Ltd | Financial services | 2021 |
| Portaway Minerals (Elton) Limited | Manufacturing | 1980 |
| Pragmatic Legal Limited | Professional & scientific | 2011 |
| Primary Pathology Ltd | Health & social care | 2012 |
| Procurement Support Ltd | Professional & scientific | 2022 |
| Professional Integrity Limited | Professional & scientific | 2023 |
| Ptsew Investments Limited | Financial services | 2015 |
| Quarters Farm Holdings Limited | Financial services | 2022 |
| Quarters Farm Limited | Real estate | 2019 |