Your information is well out of date. The Czech Republic became fully JAR compliant approximately one year ago. That means that it is in exactly the same situation as the UK.
At least one of the countries which you list as being fully effective within JAR is not, and that is Germany.
What all this means is that anyone who trains in Czech will be issued with a full JAR licence which does not require any form of conversion. That shoud be adequate for a Virgin or any other interview!