Sailorgal & Resboy
Sadly Sailorgal you would find it more difficult to be recruited by QCCUK on a 2 year working visa. The standard seems to be a visa with at least 4 years validity or an EU passport. The exception to this is if you are transferring to the UK from Qantas Airways.
Resboy on the other hand - your visa is perfectly acceptable for recruitment by QCCUK. A lot of the locally recruited crew (the ones who didn't fly for Qantas in Australia) have ancestry visas.
Lemme know if you want more info.