| OJF Mortgages Limited | Financial services | 2017 |
| Oleada Capital Ltd | Financial services | 2013 |
| Omnigistics Limited | Professional & scientific | 2019 |
| Onlyapps Limited | Information & communication | 2024 |
| Onlyvans-Uk Ltd | Wholesale & retail | 2026 |
| OPI (NW) Ltd | Hospitality | 2017 |
| OPM Procurement Ltd | Construction | 2021 |
| Orbitall Limited | Information & communication | 2003 |
| Oren Inclusive Haven Ltd | Real estate | 2025 |
| Oriental Delight 2019 Ltd | Hospitality | 2019 |
| Otto Estates Rugby Ltd | Real estate | 2024 |
| Ottoman Empire Restaurant Limited | Hospitality | 2018 |
| Outsized Advantage Ltd | Professional & scientific | 2024 |
| Oyslans I Limited | Wholesale & retail | 1997 |
| OZ Merch and Touring Limited | Wholesale & retail | 2019 |
| OZ Merch UK Limited | Wholesale & retail | 2022 |
| OZ Rental and Property Management Limited | Real estate | 2025 |
| Ozantepliler Ltd | Wholesale & retail | 2020 |
| P & E Property Solutions Ltd | Real estate | 2021 |
| P E Dykes Limited | Construction | 2012 |
| P Edwards Couriers Ltd | Transport & logistics | 2025 |
| P G Marston Plastering Contractors Limited | Construction | 2004 |
| P J Sheetmetal Solutions Ltd | Professional & scientific | 2012 |
| P K BOO Limited | Manufacturing | 2019 |
| P M Safety Consultants Limited | Professional & scientific | 1992 |
| Paks Solutions Ltd | Manufacturing | 2022 |
| Papa DE Luxe Limited | Wholesale & retail | 2025 |
| Papparich Group Limited | Hospitality | 2016 |
| Paradine Design Limited | Professional & scientific | 2000 |
| Parallel Security Limited | Other services | 2018 |
| Parmy Thandi Limited | Hospitality | 2022 |
| Parratt Construction Management Ltd | Construction | 2024 |
| Parsley Cottages Co Ltd | Real estate | 2019 |
| Patryk Transport Ltd | Transport & logistics | 2018 |
| Paul Case & Co Limited | Professional & scientific | 2012 |
| Paul Hammond Transport Limited | Transport & logistics | 2017 |
| PB32HOMES Limited | Real estate | 2022 |
| PC House International Ltd | Wholesale & retail | 2019 |
| Peak View Glazing Ltd | Construction | 2025 |
| Peascod (T) Hairdressing Limited | Other services | 2018 |
| Pels Solicitors Ltd | Professional & scientific | 2020 |
| Pelser & Wright Investments Ltd | Real estate | 2021 |
| Penchris Investments PVT Limited | Public administration | 2020 |
| Perfect Petals Limited | Administrative & support | 2021 |
| Pesr Limited | Real estate | 2025 |
| Petals & Willows Care Ltd | Health & social care | 2020 |
| Petru Haulage Limited | Transport & logistics | 2022 |
| Pgmh Consultancy Limited | Professional & scientific | 2021 |
| Pheasants Nest Boarding Kennels Ltd | Other services | 2016 |
| Phoenix Autos and Rental Ltd | Wholesale & retail | 2026 |
| Phoenix Sports Massage Ltd | Health & social care | 2019 |
| Phoenixdomcare Limited | Transport & logistics | 2020 |
| Phuman DRY Liner Ltd | Construction | 2026 |
| Physiorthotic Solutions Ltd | Real estate | 2025 |
| Pink Walls Limited | Wholesale & retail | 2023 |
| Pixel Services Limited | Information & communication | 2005 |
| Planning Management Limited | Professional & scientific | 2023 |
| Play IT Forward Collective Ltd | Professional & scientific | 2025 |
| PLAY6ASIDE Limited | Arts & recreation | 2024 |
| Plough Meadow Car Sales Limited | Wholesale & retail | 2023 |
| PMB Packaging Rework Solutions Ltd | Other services | 2014 |
| PMG Car Sales Ltd | Wholesale & retail | 2024 |
| PNA 3 Limited | Transport & logistics | 2024 |
| Pobjoy (Estreham) Limited | Extraterritorial | 1946 |
| Polladi Ltd | Wholesale & retail | 2019 |
| Premier Property Letting Services Limited | Real estate | 2020 |
| Premier Renovations (COV) Ltd | Construction | 2026 |
| Prestidge Construction Ltd | Construction | 2008 |
| Priceless Hospitality Training Solutions Limited | Professional & scientific | 2014 |
| Prima Grill and Pizza Ltd | Hospitality | 2025 |
| Priory Consultants Limited | Information & communication | 1989 |
| Professional Quality Management Services Limited | Professional & scientific | 1999 |
| Property Investor Collective Ltd | Professional & scientific | 2025 |
| Prosol Design Limited | Construction | 2014 |
| Protect ALL Solution Ltd | Administrative & support | 2023 |
| Prototype Automotive Services Ltd | Professional & scientific | 2019 |
| Prototype Metal Ltd | Manufacturing | 2015 |
| PS Medical Logistics Ltd | Transport & logistics | 2022 |
| PSD Site Services Ltd | Construction | 2025 |
| Pubblestons Limited | Education | 2019 |
| PW Allshires Tarmacadam Ltd | Construction | 2023 |
| Qiangguo Ltd | Wholesale & retail | 2025 |
| Quality Products Midlands Ltd | Wholesale & retail | 2026 |
| Quick Recruit Solutions Ltd | Administrative & support | 2017 |
| Quinn Properties Ltd | Real estate | 2017 |
| R & J Machinery Holdings Ltd | Financial services | 2013 |
| R & J Machinery Limited | Wholesale & retail | 2002 |
| R C Oughton & SON Limited | Construction | 2010 |
| R Morris Plumbing, Heating and Home Improvements Ltd | Construction | 2011 |
| R Q Integrated Services Ltd | Other services | 2015 |
| R S Industrial Sewing Ltd | Wholesale & retail | 1996 |
| R. Hemsworth & SON (Gosport) Limited | Manufacturing | 1986 |
| Ra&Am Construction Ltd | Construction | 2026 |
| Race Services Limited | Manufacturing | 2015 |
| RAY Kaziow Dentwise Solutions Limited | Wholesale & retail | 2012 |
| Raza Car Service & Accident Repairs Ltd | Wholesale & retail | 2024 |
| RBC Building Company Ltd | Construction | 2019 |
| RCN Beds & Furniture Ltd | Wholesale & retail | 2023 |
| Rebel Leisure LLP | | 2021 |
| Redline Imports Ltd | Wholesale & retail | 2023 |