THE royal wedding and visits by the Queen and Prince William have killed off any chance Australia will become a republic in the near future, according to a series of British government reports.

But changing demographics and fewer Australians with British ties means ditching the monarchy would be a natural development, the Foreign Office said.

Prince William (left) with his father, Prince Charles, and wife, Catherine. Credit:Reuters

Compiled in September and November - immediately before and after the Queen and Prince Philip's 11-day visit to Australia - the reports offer a frank assessment of the existing republican movement. ''It is clear that the debate about Australia becoming a republic is off the table for the present,'' the November report said.

Most Australians feel the issue of republicanism will not reappear until after the Queen's death, it added.