Well, I have moved the other way. Everyone over here asks me why I came over when the weather is so good over there. People can have, and not saying you do, very unrealistic expectations of living in OZ.
It isnt just about the weather.
It is about the support networks you may or may not have in either place. Your reasons for moving i.e. jobs.
In the tv shows they show sun filled beaches and people surfing and swimming 24/7. What people dont realise is that life is the same...just in better weather! You still have to clean, do the groceries, go to work. Any problems you may have in your relationship/life in general may be magnified by the lack of support network (if that is the case).
A lot of things are similar, but others are so so different, so prepare for a little bit of culture shock.
It also costs tens of thousands of pounds/dollars and there is the hassle of are you going to rent out your house/sell your house. You can have a get out clause with your partner that you can come back if one of you are really unhappy, but again, to do a full move in a short period of time is incredibly draining financially.
I could go on but I will stop here as I am preparing dinner. If you want to chat about it more, let me know and I will see if I can get back to the thread later on and answer any questions you may have.
BTW, having said all of that, I love living here in the UK as much as I did in Oz and do not regret for a minute that we made the move.