| Optivus Limited | Wholesale & retail | 2018 |
| Orancai Investments Ltd | Real estate | 2024 |
| Orange GAS and Plumbing Solutions Limited | Construction | 2021 |
| ORB Love Limited | Wholesale & retail | 2026 |
| Oriental Rentals Ltd | Administrative & support | 2025 |
| Oriental Sales Ltd | Wholesale & retail | 2025 |
| Orolago Holdings Ltd | Financial services | 2025 |
| Orsa Saiwai Limited | Administrative & support | 2007 |
| Orsa Saiwai UKS Limited | Other services | 2022 |
| Oserro Limited | Hospitality | 2013 |
| Osmak Creations Ltd | Health & social care | 2022 |
| Osmo Data Technology Limited | Information & communication | 2003 |
| Otop Limited | Wholesale & retail | 2023 |
| OTS 8705 Ltd | Real estate | 2024 |
| OTS Asset Management Ltd | Real estate | 2022 |
| OTS Broker Ltd | Administrative & support | 2024 |
| OTS Holding Capital Ltd | Financial services | 2022 |
| OWL Operation Limited | Households | 2025 |
| Oxymoxiemoose Ltd | Information & communication | 2025 |
| P Baker Heating Ltd | Construction | 2016 |
| P&M Logistics Ltd | Transport & logistics | 2020 |
| P&S Limbu Ltd | Real estate | 2025 |
| P. L. G. Properties Limited | Households | 2005 |
| P.J Haulage Services Ltd | Transport & logistics | 2017 |
| P.J. Hegarty & Sons (U.K.) Unlimited | Construction | 2010 |
| PAB Landscapes Ltd | Administrative & support | 2009 |
| Padan Design & Engineering Services Limited | Construction | 1994 |
| Paediatric Practitioner Ltd | Health & social care | 2023 |
| Pagewood Limited | Professional & scientific | 1996 |
| Paintdeco Ltd | Construction | 2016 |
| PAJ Asset Services Ltd | Professional & scientific | 2021 |
| Pakistan Bazaar Ltd | Wholesale & retail | 2014 |
| Pala Motors Limited | Wholesale & retail | 2024 |
| Paladin IT Limited | Information & communication | 2015 |
| Pandascore UK Limited | Information & communication | 2021 |
| Panier Markets Limited | Administrative & support | 2021 |
| Panjab Kitchen House Ltd | Hospitality | 2025 |
| Paragon Clinic Limited | Health & social care | 2020 |
| Paralexhab Limited | Professional & scientific | 2021 |
| Parker Assist Ltd | Administrative & support | 2024 |
| Parms Construction Limited | Construction | 2019 |
| Party Lane Planning Ltd | Wholesale & retail | 2024 |
| Parxton Consulting Ltd | Administrative & support | 2016 |
| PAS Weera Company Ltd | Administrative & support | 2012 |
| Patchwork Tours Limited | Transport & logistics | 2019 |
| Patel-Sekhon Investments Limited | Real estate | 2011 |
| Patellobjj Ltd | Arts & recreation | 2025 |
| Paul Court Management Company Limited | Real estate | 1980 |
| Paul Dawson Productions Ltd | Administrative & support | 2013 |
| Paul Marc COX Limited | Water & waste | 2019 |
| Pavilion Cars Ltd | Transport & logistics | 2021 |
| Pawak Limited | Transport & logistics | 2014 |
| Pawar Investments Limited | Real estate | 2020 |
| Pawear Ltd | Wholesale & retail | 2026 |
| Paws at the Glade Ltd | Other services | 2025 |
| Payh Limited | Transport & logistics | 2026 |
| PBL Bathrooms Ltd | Construction | 2011 |
| PBL Core Ltd | Construction | 2023 |
| PBN Globe Ltd | Information & communication | 2021 |
| Pbns Holdings Limited | Financial services | 2020 |
| Pbns Investments Limited | Financial services | 2013 |
| PEA Street Ltd. | Manufacturing | 2014 |
| Peaches on the Beach Ltd | Wholesale & retail | 2023 |
| Peakx Holdings Ltd | Real estate | 2025 |
| Pearce Adams Properties Limited | Real estate | 2020 |
| Peau Crafter Ltd | Manufacturing | 2023 |
| Pegaso Equity Limited | Administrative & support | 2013 |
| Pelham Court (Staines) Residents Association Limited | Households | 1992 |
| Penguin Solutions (Peng) Limited | Manufacturing | 1999 |
| Pennultimate Limited | Administrative & support | 2008 |
| Penton Hall Residents' Association Limited | Households | 1966 |
| Peony SO UK Ltd | Real estate | 2025 |
| PEP International Limited | Wholesale & retail | 2000 |
| Perfect Contractors Limited | Construction | 2016 |
| Perfect Contractors UK Limited | Construction | 2020 |
| Perfect Perio Ltd | Health & social care | 2015 |
| Perfect Sums Ltd | Professional & scientific | 2019 |
| Permasale Limited | Administrative & support | 1990 |
| Perpetual Property Management Ltd | Households | 2025 |
| Perrys Property Partners Limited | Hospitality | 2022 |
| Peters Ventures Limited | Real estate | 2025 |
| Petroff Ltd | Construction | 2021 |
| Pets Abroad UK Limited | Transport & logistics | 2017 |
| Pevex Heating and Plumbing Ltd | Construction | 2020 |
| Pevex Properties Ltd | Real estate | 2025 |
| PFI Properties Limited | Real estate | 2025 |
| Phantom Brawlers Ltd | Manufacturing | 2025 |
| Pharm MAK Limited | Health & social care | 2013 |
| Phaseland Property Management Limited | Households | 1996 |
| PHG Transport Ltd | Transport & logistics | 2025 |
| Phstechnolabs Ltd | Information & communication | 2023 |
| Pick OUT Limited | Construction | 2021 |
| Picture Perfect Residences Ltd | Construction | 2021 |
| Piece Pick Ltd | Wholesale & retail | 2023 |
| Pinecoat Drive Management Limited | Real estate | 2024 |
| Pinecrest Drive Management Limited | Construction | 2025 |
| Pink Panda Ltd | Real estate | 2025 |
| Pinnacle Software Technologies Limited | Information & communication | 2012 |
| Pinnacle Transport Services Ltd | Transport & logistics | 2025 |
| Pinncole Limited | Construction | 2024 |