The search engine is your friend:
http://www.pprune.org/dg-p-general-a...l-jaa-cpl.html
You need:
1. Class One Medical issued by the CAA at Gatwick (initial one can't be done anywhere else)
2. All 14 ATPL Exams (the Aussie ones don't count if you've only got a "frozen" licence)
3. Flight tests for CPL and IR.
They don't make it easy (or cheap).