| Newwater Insurance Limited | 00 353 1 802 8928 | 30 North Wall Quay, IFSC, Dublin 1, Dublin, ZZ9 9ZZ, Ireland |
| NFU Mutual | 02890 818604 | 4/8 Adelaide Street, Belfast, BT2 8GE |
| Nippon Insurance Company of Europe Ltd | 020 7628 9599 | C/o Sompo Japan Nipponkoa Insurance company of Europe Ltd, 1st Floor, 6 Devonshire Square, London, EC2M 4YE |
| Nipponkoa Insurance Co of (Europe) Ltd | 020 7628 9599 | C/o Sompo Japan Nipponkoa Insurance company of Europe Ltd, 1st Floor, 6 Devonshire Square, London, EC2M 4YE |
| Noble Insurance Company dac | + 353 1 266 6000 | 3rd Floor The Metropolitan Building, James Joyce Street, Dublin 1, Dublin, ZZ9 9ZZ, Ireland |
| Not Known | | |
| NPA | 01727 858687 | Mallinson House, 38-42 St. Peters Street, St. Albans, Hertfordshire, AL1 3NP, United Kingdom |
| 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 |
