You'd be better off asking in Rotorheads but only after you've read
http://www.pprune.org/rotorheads/253...ter-pilot.html
But, to answer your questions briefly; no and no.
You need to have the licence of the country(ies) in which you are entitled to work. If you have no entitlement to work in the UK, then there is little point getting an JAA licence for example or an FAA CPL(H) would likely be pretty useless in Australia. On the scale of things, Australia isn't that expensive a country in which to learn.
Nowhere is cheap and easy to get a helicopter licence and bear in mind that globally there is no work available for low-houred CPL(H)s.
Cheers
Whirls