Andrew is right we never transfer a fund where the member is unsure whether or not they will remain in Australia. In relation to transfers it will depend on what type of pension you have.
State Pension - being the basic state pension - it can not be moved. Other types of state pensions such as the second state pension can be moved. These are most commonly used by Government Departments such as the National Health Service (NHS).
In relation to moving back to the UK - should you transfer the pension to Australia and then access it at some point of time as a Pension payment and then move back to the UK - you will be subject to a extra tax if this is within the 5 full financial UK Years of departing the UK. You are not subject to tax on a pension draw down if you are simply returning back to the UK for a short term Holiday.