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If you have a complaint or concern, please let us know using the contact details below.

Commercial Clients

If you are a commercial B2B client and wish to either follow up a claim or make a complaint please use the form and contact details provided within the contact section of the site.

Individual retail customers

If you are an individual who has bought a policy from Advent including one of the insurance providers listed below and you wish to make a complaint then we are here to help.

To raise your complaint or concern: 

Reception: +44 (0)20 7743 8200


Written correspondence:

Advent Underwriting Ltd
2nd Floor
2 Minster Court
Mincing Lane