EASA
Having read the CAA bumph I too have a headache!
I have a JAA ATPL which will be an EASA compliant licence. I own an Annex II Cessna 170B which is non EASA. What licence do I need in 2012 to fly it in UK.
I also fly an N reg turbo prop single on my FAA CPL/IR, nothing mentioned in CAA blurb, so assume N Reg etc in Europe still to be decided by EASA.