Again, do they have reason to believe the student did not meet the standard required?
They have only the word of someone currently not in a position to make the decision. We have been told that the examiner's rating had expired but could expired possibly be CAA polite terminology for suspension for some reason known to them but not available to the general public?
Claverley, do as has been suggested and go out there and get the test passed then come back here and let us all know.