Just to depress you even further, the UK CAA Medical branch have a completely computerised system, this allows them to spot trends in the results of individual medicals over the years.
But conceivably, the time may come when national CAAs decide to share information, particularly if, as in Europe the JAA medical is of the same standard in every country.
Furthermore, many airlines have their own medical standards which equate to or exceed the JAA standard, so you could fall down there.
If you attempt to cheat on the medical, you're cheating yourself.