Hiya, me and my partner looked in to this coz his dad is emigrating out there this year and we were invited to go with him, well as if it is that easy,
your ahead if you have family out there who are residents if not then you need to be qualified in a profession that they need and you need to have a minimum amount of funds in your bank account, best bet is to go to australia house in london. Good luck
As Chelsea78 indicates, you either need to have close relatives in Australia or possess skills which are in short supply there. To find out more, start here: http://www.immi.gov.au/migrants/index.htm