| AEGON Insurance Company (UK) Ltd | | |
| Ageas Insurance (formerly Groupama) | 0207 264 2796 | Large & Complex Loss, 6th Floor, One America Square, 17 Crosswall, London, EC3N 2LB, United Kingdom |
| Ageas Insurance Limited | 01452 626000 | Ageas House, The Square, Gloucester Business Park, Brockworth, Gloucester, GL3 4AD, United Kingdom |
| AGF Insurance Limited | 0121 231 4000 | 8th Floor , 154 Great Charles Street, Birmingham, B3 3HN |
| 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 Company of Europe SE | 0345 0704471 | 7th Floor, The Hallmark Building, 52-56 Leadenhall Street, London, EC3A 2EB, United Kingdom |
| Aldgate Insurance Company Limited | 0800 678 1100 | FSCS, Beaufort House, 15 St. Botolph Street, London, EC3A 7QU |
| Allianz Global Corporate & Specialty SE | 0203 451 3676 | Allianz House, 60 Gracechurch Street, London, EC3V 0HR |
| Allianz Insurance plc | 01483 218212 | PO Box 5007, Milton Keynes, MK9 2BF |
