| Nrje Business Coaching Limited | Administrative & support | 2021 |
| Nyonvisuals Limited | Professional & scientific | 2014 |
| OA Contracting Ltd | Administrative & support | 2026 |
| Oak at Kingshill Ltd | Hospitality | 2021 |
| Oak Frame Limited | Professional & scientific | 2014 |
| ODO Construction Limited | Construction | 2026 |
| OFF the PEG Limited | Wholesale & retail | 2012 |
| Offroadbean Limited | Hospitality | 2021 |
| Old 90 Limited | Information & communication | 2019 |
| Old Chapel House Limited | Real estate | 2021 |
| Oldends Lane Management Company Limited | Real estate | 2015 |
| Olivia Rawson Ltd | Professional & scientific | 2021 |
| Olivia-Faith Care Limited | Health & social care | 2020 |
| ON Board Ironing Services Limited | Other services | 2010 |
| Oneness Creations Limited | Arts & recreation | 2025 |
| Optimal Dental Care Ltd | Health & social care | 2013 |
| Optimummy Ltd | Health & social care | 2021 |
| Orange Rhino Limited | Administrative & support | 2008 |
| Orbital Access Consulting Limited | Administrative & support | 2023 |
| Orchard House Farm Limited | Real estate | 2024 |
| Oserra Connect Ltd | Professional & scientific | 2026 |
| Ottley Harris Machinery Limited | Manufacturing | 1991 |
| Oxmimetics Limited | Manufacturing | 2024 |
| P & R Heating Limited | Construction | 2003 |
| P Gadd Plumbing & Heating Ltd | Construction | 2020 |
| Padstow Fish Limited | Wholesale & retail | 2014 |
| Painswick Valley Car Sales Limited | Wholesale & retail | 2003 |
| Panel Supplies Limited | Wholesale & retail | 2007 |
| Parker (SW) Ltd | Construction | 2014 |
| Parker (Western) Limited | Construction | 2019 |
| Parthia Limited | Wholesale & retail | 2012 |
| Paul Buckingham Limited | Administrative & support | 2005 |
| Paul Leighton Limited | Information & communication | 2004 |
| Paul Nanson Associates Limited | Education | 2020 |
| PB Garden Rooms Limited | Construction | 2024 |
| Peach Snake Limited | Hospitality | 2025 |
| Peak Cluster Limited | Transport & logistics | 2023 |
| Peak Operations Limited | Professional & scientific | 2021 |
| Penny Brierley Limited | Administrative & support | 2005 |
| Perfect Finish Plastering Ltd | Construction | 2026 |
| Perks Paraplanning Solutions Limited | Financial services | 2016 |
| Personal Rehab Ltd | Health & social care | 2025 |
| Peter C Dunham & Co Limited | Administrative & support | 2014 |
| Peter Rushton Landscapes Limited | Administrative & support | 2002 |
| Peter Woodman Travel Ltd | Administrative & support | 2020 |
| Petticoat Management Team Limited | Administrative & support | 1999 |
| Phinia Delphi UK Ltd | Manufacturing | 1999 |
| Phinia Financial Services UK Limited | Professional & scientific | 2014 |
| Physio Properties Ltd | Real estate | 2021 |
| Pinnacle Fire Risk Assessment Ltd | Financial services | 2026 |
| Pipex Limited | Manufacturing | 1975 |
| Pirls Property Services Ltd | Real estate | 2015 |
| Pitstock Solar Ltd | Energy | 2023 |
| PJT Developments Ltd | Construction | 2012 |
| Plants Direct 2 U Limited | Administrative & support | 2008 |
| Platinum Plastering Glos Ltd | Construction | 2023 |
| Pliable Limited | Administrative & support | 2000 |
| PLM Partnership Ltd | Information & communication | 2018 |
| PMA Glazing Solutions Limited | Construction | 2017 |
| PMF Properties Limited | Real estate | 2001 |
| Polaris Elements Limited | Information & communication | 1991 |
| Pooley Wright Properties Limited | Real estate | 2020 |
| Posh Club Dance Club CIC | Arts & recreation | 2021 |
| Powell Electrical & Construction Services Ltd | Construction | 2023 |
| Prediction Ltd | Professional & scientific | 2007 |
| PRH Car Body Repairs Ltd | Wholesale & retail | 2007 |
| Pricify Limited | Administrative & support | 2025 |
| Prima Medical Limited | Manufacturing | 2003 |
| Primamed Limited | Wholesale & retail | 2009 |
| Primepower International Limited | Manufacturing | 1995 |
| Primesys Ltd | Information & communication | 2021 |
| Principal Stone Ltd | Manufacturing | 2011 |
| Private Wilderness Limited | Administrative & support | 2019 |
| Proceutical Ltd | Professional & scientific | 2008 |
| Produce & Provide Ltd | Wholesale & retail | 2020 |
| Professional Valeting Services (Stroud) Limited | Administrative & support | 2005 |
| Progressive Carbon Removals Ltd | Professional & scientific | 2026 |
| Progressive Energy Holdings Limited | Manufacturing | 2023 |
| Progressive Energy Limited | Manufacturing | 1998 |
| Progressive Energy NET Zero a Limited | Manufacturing | 2022 |
| Progressive Energy Northwest Limited | Energy | 2019 |
| Progressive Energy Resilience C Ltd | Energy | 2026 |
| Progressive Energy Resilience Limited | Energy | 2024 |
| Properties by Blue Sky Ltd | Real estate | 2026 |
| Provac Consulting LLP | | 2017 |
| Puddlebrook Limited | Construction | 2005 |
| Pull Test Solutions Ltd | Construction | 2015 |
| Punna K Limited | Transport & logistics | 2026 |
| Push Code Limited | Information & communication | 2012 |
| Quakers Kennels & Cattery Ltd | Agriculture & fishing | 2024 |
| Quercus Consulting Limited | Professional & scientific | 2022 |
| Quorum Print Services Limited | Manufacturing | 2006 |
| R & C 888 Limited | Hospitality | 2024 |
| R & R Delights Ltd. | Hospitality | 2020 |
| R H Motors (South West) Limited | Wholesale & retail | 2022 |
| R J Quinn Haulage Ltd | Transport & logistics | 2021 |
| R Weale Ltd | Health & social care | 2009 |
| R&B Electrical Installations Ltd | Construction | 2008 |
| R.G.A Cars and Events Limited | Wholesale & retail | 2025 |
| RA Chain Sales UK Ltd | Manufacturing | 2013 |