| Meridian Advisory Group Limited | Professional & scientific | 2025 |
| Meta Marketing Influencers Ltd | Professional & scientific | 2023 |
| Metallix Solutions Ltd | Professional & scientific | 2025 |
| Michael Caterer Limited | Wholesale & retail | 2004 |
| Middleton Property Solutions Ltd | Real estate | 2025 |
| Mike Dobby Analytical Consultant Ltd | Professional & scientific | 2024 |
| Millands Coaching & Consultancy Ltd | Administrative & support | 2024 |
| Millthorpe Green Consortium Limited | Households | 2023 |
| Miniver Academy Ltd | Other services | 2022 |
| Miscellaneous Consultancy Limited | Professional & scientific | 2013 |
| Mission Patterns Ltd | Professional & scientific | 2016 |
| Mizo Works Limited | Administrative & support | 2018 |
| MK Waterproofing Limited | Construction | 2021 |
| Mkjh Holdings Ltd | Financial services | 2020 |
| MKR Electrical (Derbyshire) Ltd | Construction | 2021 |
| MM Sports Coaching Ltd | Arts & recreation | 2025 |
| MNA Tech Ltd | Professional & scientific | 2019 |
| Mobile Eyecare Limited | Health & social care | 2008 |
| Monarch Flooring Services Limited | Construction | 1995 |
| Monarch Resin Floors Limited | Construction | 2009 |
| Moody MOO Limited | Administrative & support | 2010 |
| Moorhall Engineering Limited | Manufacturing | 2025 |
| Moxon Enterprises Limited | Information & communication | 2016 |
| MR & MRS Smith Developments Limited | Real estate | 2020 |
| MRF Building Limited | Construction | 2016 |
| MRM Interior Solutions Ltd | Construction | 2021 |
| MS001 Trading Limited | Real estate | 2016 |
| My UK Gifts Limited | Wholesale & retail | 2019 |
| N a B Property Solutions Ltd | Construction | 2019 |
| N4 Property Solutions Ltd | Real estate | 2020 |
| Nani-Gloe Training Academy Limited | Other services | 2024 |
| National Taxi Hire Limited | Administrative & support | 2019 |
| Natural Steps Ltd | Wholesale & retail | 2012 |
| Needham Consultancy Services Ltd | Professional & scientific | 2019 |
| Nellyblue Ltd | Wholesale & retail | 2022 |
| Nelson & Derby Ltd | Real estate | 2012 |
| Nelson Studios Limited | Information & communication | 2016 |
| Neon Construct Ltd | Construction | 2020 |
| Neverlift World Limited | Wholesale & retail | 2023 |
| New ERA Joinery & Home Improvements Ltd | Construction | 2020 |
| Newyol Ltd | Wholesale & retail | 2025 |
| Next-Gen Protection Ltd | Wholesale & retail | 2026 |
| Niche Catering Limited | Hospitality | 2011 |
| Nicholas James Homes Limited | Construction | 2014 |
| Nick Ibbotson Developments Limited | Construction | 2006 |
| Nicols Properties Ltd | Real estate | 2022 |
| Nixon Catering Ltd | Hospitality | 2026 |
| NML Residential Ltd | Real estate | 2025 |
| Northern Property Developments (Chesterfield) Ltd | Real estate | 2019 |
| Northern Steel Structures Limited | Construction | 2025 |
| Northstar Traction Limited | Transport & logistics | 2003 |
| Northweb Digital Limited | Information & communication | 2018 |
| Nourishing Space CIC | Education | 2025 |
| Nova Building Compliance Ltd | Construction | 2024 |
| Nuchal Ltd | Wholesale & retail | 2020 |
| Nuyu Sports Clinic Limited | Other services | 2019 |
| Nxtgen Driving School Ltd | Education | 2024 |
| Oak Electrical Solutions Ltd | Construction | 2017 |
| Oakbrook Resolve Ltd | Hospitality | 2021 |
| Oakdell Estates Ltd | Wholesale & retail | 2025 |
| OBO Packwood Estate Rentals Limited | Real estate | 2026 |
| Odyc IT Ltd | Administrative & support | 2017 |
| Ogden Holdings Limited | Administrative & support | 2001 |
| OK Repair Services Ltd | Construction | 2021 |
| Olipat Property Holdings Limited | Real estate | 2021 |
| Oliver Parnell Ltd | Hospitality | 2025 |
| Optilink Developments Ltd | Information & communication | 2024 |
| Optimal Health Limited | Health & social care | 2003 |
| Original Goat Limited | Wholesale & retail | 2022 |
| Oval Group Ltd | Manufacturing | 2020 |
| Ovva Ltd | Wholesale & retail | 2023 |
| P R Y Electrical Limited | Construction | 2014 |
| P&P Promotional Partners Ltd | Administrative & support | 2012 |
| Padel 18 Ltd | Arts & recreation | 2025 |
| Pajy Ltd | Wholesale & retail | 2024 |
| Palm Boutique Limited | Extraterritorial | 2005 |
| Panoramic Group Facilities Ltd | Manufacturing | 2018 |
| Panthos Limited | Professional & scientific | 1997 |
| Paper & Paint UK Ltd | Construction | 2016 |
| Paperclip Admin Ltd | Administrative & support | 2006 |
| Paperplane Consulting Ltd | Professional & scientific | 2020 |
| Parking Fair Ltd | Other services | 2025 |
| Parry Locum Solutions Ltd | Health & social care | 2025 |
| Paul Hanstock Air Conditioning Services Limited | Construction | 1999 |
| PBS (South Yorkshire) Limited | Construction | 2018 |
| PCC Holdings Limited | Households | 2021 |
| PEA Enterprises Limited | Financial services | 2024 |
| Peak Catering Ltd | Hospitality | 2025 |
| Peak GAS Solutions Ltd | Construction | 2019 |
| Peak Pets Ltd | Wholesale & retail | 2023 |
| Peak Sales & Marketing Limited | Professional & scientific | 2005 |
| Peak SMW Property Ltd | Real estate | 2024 |
| Peak Wellness Medispa Ltd | Other services | 2023 |
| Peakora Limited | Real estate | 2024 |
| Pell’S Angels Limited | Health & social care | 2024 |
| Pemberton Projects Ltd | Construction | 2022 |
| Pemberton Properties Ltd | Real estate | 2021 |
| Pension Claim Consulting Ltd | Financial services | 2015 |
| Penta B Ltd | Professional & scientific | 2003 |
| People First Digital Limited | Professional & scientific | 2025 |