London | Leading Brexit rebel Boris Johnson has renewed his call for a trans-Tasman-style free-movement area between Britain and Australia after Brexit, following the launch of a report calling for Prime Minister Theresa May's government to make relations with Australia a top priority after leaving the European Union.

The report, authored by Conservative MP and foreign-policy specialist Bob Seely and researchers at the Henry Jackson Society, by reputation a neoliberal think tank, said Canada, Australia, New Zealand and the United Kingdom (CANZUK) represented "a natural alliance to be deepened and developed".