| OIC (Run-Off) Ltd c-o PWC Business Services | 01612369191 | 1 Hardman Square, Manchester, M3 3EB, United Kingdom |
| Omni Whittington Insurance Services Ltd. | | |
| Onderlinge Verzekerings-Maatschappil | 31 50 5343211 | Rijksstraatweg 361, CH Haren, The Netherlands, ZZ9 9ZZ, The Netherlands |
| Orion Insurance Company (OIC) | 01244 370077 | Poplar House, Park West, Sealand Road, Chester, CH1 4RN, United Kingdom |
| OX Reinsurance Company Limited | 020 7068 8000 | The Iris Building, 193 Marsh Wall, London, E14 9SG, United Kingdom |
| Pan Insurance DAC | 353 1 266 6000 | 3rd Floor, The Metropolitan Building, James Joyce Street, Dublin, ZZ9 9ZZ, Ireland |
| Pearl Assurance Limited | 01733 476602 | The Phoenix Group, Lynch Wood, Peterborough, PE2 6FY, United Kingdom |
| Pearl Group Ltd | | |
| Petrus Insurance Company Limited | +350 2005 1801 | Suite 827, Europort, Gibraltar, Gibraltar |
| Pharma International Insurance DAC | 00353 1 266 6091 | 3rd Floor The Metropolitan Building, James Joyce Street, Dublin, ZZ9 9ZZ |
