"JAA" compliant is misleading terminology.
If you go to UKFT you will get an FAA PPL, not a JAA PPL. The rules for converting it to a JAA PPL are contained in
JAR-FCL1
Appendix 2 to JAR-FCL 1.015
Conversion of a PPL issued by a non-JAA Member State to a JAR-FCL PPL
(See JAR-FCL 1.015(c)(2))
The minimum requirements for the conversion of a private pilot licence issued by a non-JAA Member State to a JAR-FCL licence are:
(a) the applicant shall hold a licence issued in accordance with ICAO Annex 1
(b) the applicant shall hold at least a JAR-FCL Class 2 medical certificate
(c) to hold R/T privileges acceptable to the Authority
(d) the applicant shall comply with the flying experience requirements set out in the table below
National licence held
Experience requirement ›100 hours as pilot of aeroplanes
Any further JAR-FCL requirements
Current and valid national ICAO PPL
(a) Pass a written examination in Air Law and Human Performance and Limitations
(b) Pass the PPL skill test as set out in Appendix 1 to JAR-FCL 1.130 and 1.135 and Appendix 2 to JAR-FCL 1.135
(c) Fulfil the relevant requirements of Subpart F
(Subpart F covers the requirement for a Type or Class Rating)
So:- You get your "JAA Compliant" license (in reality an ICAO compliant FAA PPL). To convert that to a JAA PPL you need to have more than 100 hours as Pilot, a valid JAA Class 2 Medical (your FAA medical won't count), Pass 2 Written Exams, and the PPL Skills Test, and have a current JAA Class or Type Rating. Not terifically JAA compliant is it?
Mike