New Zealand First leader Winston Peters is calling for a free trade agreement among Commonwealth countries, and wants to use New Zealand's CER agreement with Australia as a template.
He said a British exit from the EU could offer such an opportunity and could "heal a rift" with New Zealand that occurred when Britain became a member of European Economic Community in 1973.
Mr Peters also believes that New Zealand should take advantage of the troubles Russia is having with Europe and restore a full trading relationship with Russia.
Mr Peters' endorsement of CER as a model for others is a shift in position - at the 2014 election his policy was to review all bilateral free trade agreements, including the Closer Economic Relations agreement with Australia, to ensure they were in New Zealand's interest.
Speaking to an agricultural related industries conference in Auckland today, Mr Peters backed an exit by Britain ("Brexit") of the European Union - to be put to a referendum on June 23 - saying Norway had shown that Britain could flourish outside the EU.