Lyttleton Port settled its insurance claims against its insurers for about $450M for earthquake damage caused by the 4 September 2010 earthquake.  It then sued its insurance broker, Aon, claiming a further $170M alleging that Aon was negligent in not obtaining full replacement cover of the Port’s assets without sub limits.  Aon joined Colliers and Opus as third parties.  Aon also asked the court to join as a third party the Port’s solicitor, Tony Paterson, alleging that he had failed to give advice to the Port about the relevant insurance policy.  The High Court twice refused to join Mr Paterson.  In Lyttelton Port Company Ltd v Aon New Zealand & Ors [2018] NZHC 2809 the Court granted Aon leave to appeal to the Court of Appeal.