English lighting designer with query

Hi I'm a lighting designer from the UK with an Aussie girlfriend. We're currently living in London but we're considering relocating down under. At the moment, work in the UK is pretty easy for me to find on the freelance circuit. There are so many theatres, dance companies and fringe theatre groups, I'm rarely out of work. Although I know where to go to get work in the UK, my fear is that in Australia, I won't have a clue where to look! I'd like to live in Sydney (or possibly Melbourne), and I'm hoping such a big cultural city would have a healthy theatre network. Can anyone advise me on this? What's the theatre network situation in Australia, especially Sydney? Is is easy for non Aussie theatre professionals to get work? Forgive my ignorance on this subject - it's just that this is something I've never looked into before. Also, are there many contemporary dance companies in Sydney/Australia? Lighting for dance is what I have the most experience in. If anyone could give me any advice I'd be really grateful. Many thanks