Confus suggested that this is about to change (see quote above). Even if it doesn't it may be that if they are returning to the UK each year that they have relatives with a UK address that they could use.
Missed Confus’ reply. Thanks.
Currently though, if someone is using a UK address to circumvent the rules but travel pattern clearly indicates being based in Australia, would that not constitute misuse of the account and therefore the account holder risks being subject to whatever fire and fury the Exec Club chooses to impose?