Do you happen to have a CAP reference (or similar) I can take to the school before I ask to take one of their G- reg aircraft with my Aussie licence?
Yes.
Check out UK CAA Information Notice IN-2015/028, deferring the need for foreign Licences to be validated for private flights in EASA aircraft until 8th April 2016, here:
http://www.caa.co.uk/docs/33/Informa...ice2015028.pdf
MJ
