As Peter says above, for goodness sake dont let the b*ggers pick us off one by one. Leave it until the last possible moment. It will be the CAA's problem not ours. They will not ground 15000 ICAO licence holders overnight. Anyway, as has been remarked, at the moment, AIUI, there is no conversion process for CAA PPL direct to EASA PPL, and some say it would require additional training in radio nav if not already done.