Take a look at
this link - specifically section 3.1.5 and 3.3/3.4
IT is unlikely that they will request your complete records - merely that the GP answer a questionnaire - which they must have your consent to do.
Assuming that this "foolishness" has been resolved - most GPs will quite happily avoid mentioning it unless it is specifically mentioned in the questionnaire.
As ever - just my opinion. (although I will be seeing a number of doctors tomorrow, and will see what their oppinion is as well..
)