| Accredited Insurance (UK) Limited | | |
| Admiral Insurance (Gibraltar) Limited (AIGL) | 020 3808 7099 | c/o Toolbox by Admiral, Ty Admiral, David Street, Cardiff, CF10 2EH |
| AEGIS Syndicate 1225 at Lloyd's | 0207 2652100 | c/o Aegis Syndicate 1225 at Lloyds, 33 Gracechurch Street, London, EC3V 0BT, United Kingdom |
| AEGON Insurance Company (UK) Ltd | | |
| Ageas Insurance (formerly Groupama) | 01452 626000 | Ageas House, The Square, Gloucester Business Park, Brockworth, Gloucester, GL3 4AD, United Kingdom |
| Ageas Insurance Limited | 01452 626000 | Ageas House, The Square, Gloucester Business Park, Brockworth, Gloucester, GL3 4AD, United Kingdom |
| AIEL QBE | 020 7977 0885 | Michael Beasant, 71 Fenchurch Street, London, EC3M 4BS, United Kingdom |
| AIG Europe SA Ireland branch | 35312081437 | 30 North Wall Quay, International Financial Services Centre, Dublin 1, Dublin, ZZ9 9ZZ |
| Aioi Insurance Company Of Europe Limited | 01483 452622 | c/o Brampton Insurance Company Limited, Avaya House, 2 Cathedral Hill, Guildford, Surrey, GU2 7YL, United Kingdom |
| Aioi Nissay Dowa Insurance UK Limited | 0345 0704471 | 7th Floor, The Hallmark Building, 52-56 Leadenhall Street, London, EC3A 2EB, United Kingdom |
