| Orrell & Winstanley Community Sports Club | Arts & recreation | 2017 |
| Orrell Alloy Wheel Refurbishment Ltd | Wholesale & retail | 2026 |
| Orrell Barber Ltd | Other services | 2024 |
| Orrell Chiropody Practice Ltd | Health & social care | 2003 |
| Orrell Design Services Ltd | Professional & scientific | 2021 |
| Orrell Developments Ltd | Real estate | 2015 |
| Orrell Heating & Plumbing Limited | Construction | 2009 |
| Orrell Investments Ltd | Real estate | 2021 |
| Orrell Leisure Limited | Hospitality | 2023 |
| Orrell Lettings Limited | Real estate | 2019 |
| Orrell Mini Travel Ltd | Transport & logistics | 2010 |
| Orrell Plumbing Solutions Ltd | Construction | 2019 |
| Orrell Property Ltd | Real estate | 2026 |
| Orrell Rentals Ltd | Real estate | 2019 |
| Orrell Windows Limited | Manufacturing | 2004 |
| Orrell Ymca Limited | Arts & recreation | 2026 |
| Orvelius Ltd | Professional & scientific | 2026 |
| Osandor | Professional & scientific | 2025 |
| Osbm Publishing Limited | Information & communication | 2011 |
| Osborne & Co Salon Limited | Other services | 2015 |
| Osicalo | Professional & scientific | 2025 |
| Osprey Healthcare Limited | Manufacturing | 2008 |
| Osprey Insurance Brokers Limited | Financial services | 2025 |
| Osprey Sling Company Limited | Manufacturing | 2009 |
| Otistic CIC | Health & social care | 2025 |
| OTJ PUB Management Limited | Hospitality | 2025 |
| OTT Investments Limited | Real estate | 2019 |
| OTT Systems Limited | Professional & scientific | 2017 |
| OUR Doggy Dayz Ltd | Other services | 2018 |
| OUR Hot Food Limited | Extraterritorial | 2019 |
| OUR Icons Ltd | Arts & recreation | 2024 |
| OUT of School at ALL Saints | Education | 2008 |
| Outside Sport Limited | Other services | 2007 |
| Ov-Group (Wigan) Limited | Real estate | 2024 |
| Ov-Group Holdings Limited | Professional & scientific | 2024 |
| Ovelle Interiors Ltd | Wholesale & retail | 2026 |
| Overrated IT Ltd | Administrative & support | 2019 |
| Overrated Limited | Information & communication | 2018 |
| Owbruk Holdings Limited | Financial services | 2018 |
| OWC Supply Co Limited | Wholesale & retail | 2024 |
| OWD Barn Service Station Limited | Wholesale & retail | 2006 |
| Owen a Farrell Ltd | Arts & recreation | 2012 |
| Owen Groundworks & Construction Limited | Construction | 2008 |
| Owon Smarttek Ltd | Manufacturing | 2017 |
| Owon Technology Limited | Construction | 2006 |
| Oxelis Healthcare Ltd | Health & social care | 2025 |
| Oximot | Professional & scientific | 2025 |
| Oxyplast UK Limited | Wholesale & retail | 2004 |
| OZ Family Group Ltd | Transport & logistics | 2026 |
| Ozybel Ltd | Transport & logistics | 2024 |
| Ozzys Kebabs Ltd | Hospitality | 2022 |
| P & a Jennings Holdings Limited | Administrative & support | 2002 |
| P & C Finch Limited | Other services | 2015 |
| P & E White Limited | Information & communication | 2013 |
| P & P Chandarana Limited | Wholesale & retail | 2002 |
| P & S Dance Academy Limited | Extraterritorial | 2019 |
| P and B Eyecare Ltd | Health & social care | 2023 |
| P and R Motorworks Ltd | Manufacturing | 2023 |
| P B Battery Solutions Limited | Administrative & support | 2012 |
| P B Plumbing & Heating Limited | Construction | 2003 |
| P Barrow Landscapes Ltd | Administrative & support | 2009 |
| P Bell Ltd | Construction | 2025 |
| P Cain Buffets Limited | Wholesale & retail | 2026 |
| P Corkill Construction Ltd | Construction | 2003 |
| P D Contracts Limited | Professional & scientific | 2008 |
| P D Interiors Ltd | Construction | 2018 |
| P G Latham & Co Limited | Manufacturing | 1998 |
| P Gill Ltd | Health & social care | 2018 |
| P Harrison Contractors Ltd | Transport & logistics | 2018 |
| P J T Engineering Limited | Manufacturing | 2002 |
| P J Wild Funeral Service Limited | Other services | 2024 |
| P&D Plumbing and Heating Solutions Ltd | Construction | 2010 |
| P&M Dispensing Sanity Limited | Hospitality | 2023 |
| P&Q Structural Engineering Ltd | Construction | 2020 |
| P&V Limited | Health & social care | 2015 |
| P&Z Property Investments Limited | Real estate | 2025 |
| P. J. Warburton Plumbing & Heating Ltd | Construction | 2011 |
| P. L. G. Gallagher Ltd | Real estate | 2015 |
| P.E. Systems Limited | Manufacturing | 1987 |
| P.F. Consultancy Limited | Professional & scientific | 2007 |
| P.J. Knap Ltd | Transport & logistics | 2016 |
| P.K.J. Flooring (UK) Limited | Construction | 2003 |
| P.S Travel UK Limited | Transport & logistics | 2007 |
| PA Transport Solutions Ltd | Transport & logistics | 2018 |
| Pac-Hs Limited | Wholesale & retail | 2009 |
| Pack 4 Limited | Manufacturing | 2004 |
| Packaged Heat Limited | Manufacturing | 2018 |
| Packaging 4 Limited | Professional & scientific | 2003 |
| Packaging Reuse & Disposal Services Ltd | Water & waste | 2010 |
| Packrunner Logistics Ltd | Transport & logistics | 2025 |
| Paddy's PIT Limited | Hospitality | 2024 |
| Padwie Limited | Wholesale & retail | 2025 |
| PAH External Works Limited | Construction | 2022 |
| Paige Emilee Aesthetics Ltd | Health & social care | 2026 |
| Paint Finishing Systems Ltd | Professional & scientific | 2014 |
| PAL Electrical (NW) Limited | Construction | 2022 |
| Palendrom | Professional & scientific | 2025 |
| Palentine Advisory Ltd | Information & communication | 2021 |
| Pall Mall Carpets Limited | Wholesale & retail | 2006 |
| Palledon | Professional & scientific | 2025 |