Australian Government owned ABC News, October 21, 2021, reports:
the UK's departing Chief of the Defence Staff, General Sir Nicholas Carter, has stated Japan, Canada and New Zealand could eventually join AUKUS in the future.
Now that this idea has been suggested at such a senior level, UK government and diplomatic sources have played it down.
Pete Comment
As the main substance of AUKUS is Australia's right to build nuclear propelled submarines that right could be extended to Japan and Canada if they joined AUKUS.