ANZ Bank New Zealand Limited (commonly referred to as ANZ) is a New Zealand banking and financial services company, which operates as a subsidiary of Australia and New Zealand Banking Group Limited of Australia.In 1840, Union Bank of Australia (UBA), a British bank with head office in London, agreed with the New Zealand Company to accompany settlers to New Zealand to provide them with banking services. UBA opened a branch in Petone, across the harbour from Wellington, where it transferred the branch shortly thereafter. Between 1840 and 1847 the Union Bank issued its own bank notes for circulation in New Zealand.