No.
In 1987 you would have been granted a UK PPL which, if you is valid 'for the holder's lifetime unless revoked, suspended or varied'. Whereas the JAR-FCL has to be re-issued every 5 years irrespective of Rating validity; currently that costs £59 for absolutely $od all. An utter con trick which I pointed out at the time that JARocracy came in, but which was brushed over by the deceitful people at the CAA who forced it on us.....
If you ever think of changing your UK PPL to a JAR-FCL PPL, DON'T!!