"We would like to have sold the UK banks any time in the last six years," Michael Chaney, the outgoing chair of National Australia Bank said yesterday at the annual meeting."We dealt with trade buyers, gave them access, but they had their own issues."Instead NAB is demerging and listing the UK business early next year.Chaney conceded Commonwealth Bank and Westpac "have a natural advantage", writing home business "with their ears pinned bank."He reflected on NAB's break up campaign from the NAB era, with a three percentage point gain in home loans market share."These are enormous super takers, it takes time to turn them."You can't go from being a business bank to a mortgage bank simply."