| Media Services Leeds Ltd | Information & communication | 2012 |
| Medicare Pharma Limited | Health & social care | 2018 |
| Member Event Solutions Ltd | Administrative & support | 2026 |
| Meraki Group Limited | Wholesale & retail | 2015 |
| Meraki Logistics Limited | Transport & logistics | 2015 |
| MH Precision Products Limited | Professional & scientific | 2012 |
| Mhara Enterprises Ltd | Transport & logistics | 2025 |
| Mhqsmartrepairs Ltd | Wholesale & retail | 2024 |
| Milbucon (Holdings) Limited | Financial services | 1979 |
| Mileta Sports Limited | Wholesale & retail | 1973 |
| Mitchell House Developments Ltd | Construction | 2025 |
| Moby Foods (Holdings) Limited | Hospitality | 2008 |
| Moby Foods Limited | Wholesale & retail | 1996 |
| Moldovan Maintenance Ltd | Construction | 2022 |
| Molly Dolly’S Boutique Limited | Wholesale & retail | 2025 |
| Moore Changes Limited | Administrative & support | 2015 |
| Morton Industrial Plastics Limited | Manufacturing | 2001 |
| Motor Medics Limited | Wholesale & retail | 2024 |
| Motorcare Centre MOT Station Ltd | Other services | 2016 |
| Motortastic Ltd | Wholesale & retail | 2021 |
| Mozaq Limited | Professional & scientific | 2020 |
| MR T'S Cars Ltd | Wholesale & retail | 2020 |
| MTH Living Ltd | Real estate | 2025 |
| MTH Travel Ltd | Transport & logistics | 2025 |
| MVP Empire Ltd | Wholesale & retail | 2025 |
| N a Dog Handling Ltd | Administrative & support | 2022 |
| Namco Enterprise Ltd | Transport & logistics | 2023 |
| Nanotech Vault Ltd | Wholesale & retail | 2025 |
| NB Logistics Ltd | Administrative & support | 2011 |
| Nearby.Cab Ltd | Transport & logistics | 2022 |
| Neighbourhood Wash Ltd | Administrative & support | 2020 |
| New Chans Takeaway Ltd | Hospitality | 2023 |
| Niknick Leisure Ltd | Hospitality | 2024 |
| NK1 (Holdings) Ltd | Financial services | 2013 |
| North Road Build Ltd | Real estate | 2025 |
| Northfields Heckmondwike Limited | Education | 2023 |
| Nought Percent Ltd | Wholesale & retail | 2025 |
| Nova Visage Limited | Real estate | 2026 |
| Nowfuture Limited | Professional & scientific | 2025 |
| OBB Mobile Car Valet Ltd | Administrative & support | 2025 |
| Olive and Padgett (Holdings) Limited | Professional & scientific | 2023 |
| Olive and Padgett Limited | Professional & scientific | 1964 |
| Ollie Designs Ltd | Professional & scientific | 2025 |
| ON Track Diecast Ltd | Wholesale & retail | 2026 |
| ON Vapes Limited | Wholesale & retail | 2025 |
| One Stop Motors Heckmondwike Ltd | Wholesale & retail | 2026 |
| Online Sales Group Ltd | Wholesale & retail | 2025 |
| OSM Property LLP | | 2023 |
| Ottomanz Ltd | Manufacturing | 2024 |
| Overboost Limited | Wholesale & retail | 2016 |
| OWS (Trading) Limited | Wholesale & retail | 2019 |
| P. Craven Engineering Co Limited | Construction | 2010 |
| Pacific Shelf 1792 Limited | Manufacturing | 1947 |
| Pamper Zone Just Relax Limited | Other services | 2025 |
| Paramite Pest Solution Ltd | Agriculture & fishing | 2008 |
| Paramount 24/7 Care Ltd | Health & social care | 2023 |
| Parties R US Limited | Other services | 2020 |
| Partnersx Limited | Information & communication | 2024 |
| PDE Electrical Wholesalers Ltd | Manufacturing | 2020 |
| Peakperformancemotors Ltd | Wholesale & retail | 2024 |
| Pearson D Electrical Limited | Manufacturing | 2018 |
| Pebble Ecommerce Ltd | Wholesale & retail | 2022 |
| Peshawari Traskoon Ltd | Hospitality | 2025 |
| Pinkham Software Limited | Information & communication | 2012 |
| Pizza Passion Outlet Ltd | Hospitality | 2025 |
| Pizza Passion UK Ltd | Hospitality | 2026 |
| Pizza Valentina Heckmondwike Ltd | Hospitality | 2026 |
| Pizza Valentina Limited | Hospitality | 2022 |
| PM Digital Ltd | Financial services | 2018 |
| Pound Bargains + Ltd | Wholesale & retail | 2018 |
| Powerhouse PA Ltd | Wholesale & retail | 2013 |
| Pravic Limited | Health & social care | 2020 |
| Precast Technologies Limited | Financial services | 2010 |
| Premier Boiler Solutions Ltd | Construction | 2025 |
| Premier Law Support Ltd T/A PLS Limited | Professional & scientific | 2025 |
| Prime London PL Ltd | Wholesale & retail | 2020 |
| Prinktoner Ltd | Wholesale & retail | 2015 |
| Pro Bodies Bradford Ltd | Other services | 2021 |
| Proficient Consulting Ltd | Information & communication | 2015 |
| Projectix Limited | Manufacturing | 2024 |
| PROTECH5 Limited | Other services | 2020 |
| Provine Limited | Information & communication | 2015 |
| Pwyc Limited | Information & communication | 2008 |
| Q a Vision Limited | Administrative & support | 2016 |
| Quality's Food Limited | Hospitality | 2023 |
| Quartz Capital Ltd | Information & communication | 2020 |
| Quick Learner Ltd | Wholesale & retail | 2023 |
| Quote My Journey Limited | Professional & scientific | 2023 |
| Raje Food Company Limited | Wholesale & retail | 2025 |
| Rapid Medical Legal Limited | Health & social care | 2007 |
| Raskelf Group Holdings Limited | Manufacturing | 2023 |
| Raskelf Limited | Manufacturing | 2004 |
| Redfearns Legal Services Limited | Professional & scientific | 2018 |
| Redfearns Solicitors LLP | | 2009 |
| Rehabilitation and Physiotherapy Service Ltd | Health & social care | 2019 |
| Reliance Healthcare and Support Services Limited | Health & social care | 2024 |
| Remotewatch Monitoring Ltd | Administrative & support | 2006 |
| Retrieval Transfers Ltd | Transport & logistics | 2024 |
| Revive Day Spa LLP | | 2024 |
| RFR Developments Ltd | Construction | 2026 |