Can an Australian Licence holder drive in the UK?..
Yes, they can. You can also effectively swap an Australian Driver Licence for a UK Driving Licence, without a test.
An Australian Driver Licence holder can drive in the UK without exchanging their Australian licence for 12 months after becoming resident in the UK.
Before that 12 months is up, they must exchange their licence for a British one, if they wish to keep driving.
15.1 - 676,974