| Macs Building Solutions Limited | Construction | 2017 |
| Mallory House Ltd | Professional & scientific | 2024 |
| Matilda Engineering Ltd | Manufacturing | 2019 |
| Mawdsley Computing Limited | Information & communication | 1995 |
| Maxsafe Global Limited | Manufacturing | 2018 |
| MBS Fairs Limited | Administrative & support | 2016 |
| Mcleod Holdings (NW) Limited | Financial services | 2024 |
| MD Hair Design Ltd | Other services | 2012 |
| Mentha & Halsall (Shopfitters) Limited | Construction | 1976 |
| Mere Estates Ltd | Real estate | 2017 |
| Mesa Limited | Agriculture & fishing | 2002 |
| Metalology Bespoke Fabrications Ltd | Manufacturing | 2021 |
| MFE Horizons Ltd | Financial services | 2020 |
| MGA Controls Limited | Wholesale & retail | 1989 |
| Midori Advisory Limited | Professional & scientific | 2019 |
| Mirage Builders Limited | Construction | 2021 |
| MKO Engineers Limited | Other services | 2005 |
| MM Business Services (NW) Limited | Professional & scientific | 2012 |
| MM Services NW Ltd | Administrative & support | 2014 |
| MNS Cabinet Solutions Limited | Construction | 2009 |
| Motor Alliance Ltd | Financial services | 2020 |
| MPB Haulage Ltd | Transport & logistics | 2025 |
| MPM Solutions (Northwest) Ltd | Professional & scientific | 2023 |
| MSG Developments LLP | | 2010 |
| MSK Electrical Ltd | Construction | 2019 |
| Mula Yoga & Wellbeing Limited | Arts & recreation | 2019 |
| Mwinnard Landscapes Ltd | Administrative & support | 2018 |
| My Photo.Com Limited | Administrative & support | 2011 |
| N&J Harrison Property Services Limited | Real estate | 2025 |
| Namirembe Limited | Real estate | 2022 |
| National Park Adventure Tours Ltd | Administrative & support | 2026 |
| NBR North West Ltd | Financial services | 2024 |
| North West Linux Ltd | Information & communication | 2002 |
| North West Wholesale Limited | Wholesale & retail | 2014 |
| Norwest Storage Ltd | Manufacturing | 2020 |
| Nova Psychology Ltd | Education | 2025 |
| Nutree Holdings Limited | Manufacturing | 2022 |
| NW Pallet Trucks Limited | Wholesale & retail | 2020 |
| NWP Limited | Manufacturing | 2000 |
| Oak Tree Design Ltd | Professional & scientific | 2011 |
| Oakfox Limited | Professional & scientific | 2026 |
| Octahedron Property Limited | Real estate | 2020 |
| Olive Grove Salads Limited | Agriculture & fishing | 2004 |
| Olumo Rock LLP | | 2025 |
| Optifibre Limited | Information & communication | 2021 |
| Optimal Air Conditioning Limited | Energy | 2023 |
| Oscar Deen Eyewear Limited | Wholesale & retail | 2016 |
| Outlaw Porscha Parts Ltd | Manufacturing | 2020 |
| Oxso Ltd | Wholesale & retail | 2023 |
| P&L Heritage Enterprises Ltd | Hospitality | 2025 |
| Pairform Limited | Professional & scientific | 2022 |
| Pangaea Regulatory Consultancy Limited | Public administration | 2022 |
| Papa Building Services Ltd | Construction | 2013 |
| Partnership Capital Advisors Limited | Professional & scientific | 2014 |
| Pasta Liguori UK Limited | Wholesale & retail | 2023 |
| Paul Rothwell and Sons Ltd | Construction | 2024 |
| Peak Health & Performance Sports Therapy Ltd | Health & social care | 2020 |
| Pegasus 44 Ltd | Administrative & support | 2021 |
| Pelican Care Group Ltd | Health & social care | 2015 |
| Pelican Technical Solutions Limited | Administrative & support | 2008 |
| Percent Pilates Limited | Arts & recreation | 2009 |
| PH Restorations Ltd | Manufacturing | 2021 |
| Pharmwear Ltd | Manufacturing | 2025 |
| Phil Palmer Holdings Ltd | Real estate | 2021 |
| Phoenix Collaborative Care Ltd | Administrative & support | 2022 |
| Pinball Heaven Limited | Wholesale & retail | 2006 |
| Pinecrest Consultancy Ltd | Administrative & support | 2017 |
| PJS Contracting Ltd | Manufacturing | 2022 |
| PME Solutions Ltd | Construction | 2010 |
| PMI Cabinets LLP | | 2012 |
| PMI Cabinets London Limited | Manufacturing | 2023 |
| Post Mortem Pathology Services Limited | Health & social care | 2019 |
| PRD Business Services Ltd | Professional & scientific | 2020 |
| Prema Plus Holdings Ltd | Mining & quarrying | 2023 |
| Premium Faber Limited | Information & communication | 2013 |
| PRL Care Ltd | Administrative & support | 2016 |
| Propac Packaging Limited | Wholesale & retail | 2006 |
| PZJ Limited | Financial services | 2022 |
| Quick Picture Ltd | Administrative & support | 2022 |
| R & a Restaurants Limited | Hospitality | 2010 |
| R & C Fashions T/A Rcfashion Ltd | Wholesale & retail | 2015 |
| RA Utility Solutions Ltd | Professional & scientific | 2025 |
| Rachel K Wilson Limited | Administrative & support | 2020 |
| Rainbow Coatings Limited | Construction | 2008 |
| Ramages Limited | Manufacturing | 2009 |
| RB Lending Solutions Ltd | Financial services | 2026 |
| REDBIRD404 Limited | Information & communication | 2017 |
| Regal Commerce Limited | Information & communication | 2003 |
| Resin on Your Drive Limited | Construction | 2025 |
| Ride Photography Limited | Administrative & support | 2003 |
| Rivendell Property Developments Ltd | Construction | 2026 |
| River Technologies Ltd | Information & communication | 2020 |
| RM Services Limited | Other services | 1991 |
| Roberts & Co Coffee Roasters & Cafe Ltd | Manufacturing | 2022 |
| Rooney Building Solutions Ltd | Construction | 2023 |
| Rothwell Rentals HB Ltd | Real estate | 2026 |
| RP Engineering Ltd | Professional & scientific | 2022 |
| RPC Enterprises Ltd | Information & communication | 2020 |
| SAP Nutrition Ltd | Wholesale & retail | 2021 |
| Sapori Ormskirk Ltd | Hospitality | 2024 |