Originally Posted by
flyingmonkie
When you land in Sydney the trains are usually running (albeit to a Saturday timetable but that's fine from the airport) but almost every shop will be closed. Obviously don't know your plans but it's much more of a shutdown than "back home" in the UK. Also expect public holiday surcharges everywhere from taxis to hotels (for hotel read pub).
If the flight leaves London on Christmas Day evening..it should arrive early on December 27th in Sydney. Isn't that a normal work day in Australia as well?