I read the medical requirements for train drivers and it only really specifically says what JRE has said, in that...
2.1.2.1 Railway undertakings shall not permit train drivers to continue driving duties where there is reason to believe they may be suffering from any medical
condition or be taking any medication, drugs or substances, which are likely to
cause:
a) Sudden loss of consciousness.
b) A reduction in attention or concentration.
c) Sudden incapacity.
d) A loss of balance or co-ordination.
e) Significant limitation of mobility.
2.1.2.2 Railway undertakings shall, as part of medical examinations of train drivers,
include an electrocardiograph (ECG) examination at the first medical
assessment, then at the first assessment after reaching the age of 40 and at each
periodic reassessment thereafter.
For me, this is really reassuring. My epilepsy doesn't cause any of the 5 things listed (A-E) and never has.
It goes on to say that drivers who are required to take epileptic medication will require an expert medical opinion on their ability to undertake the role, but it doesn't make them unfit for the role.
Prior to 2013 there was a blanket ban on anybody with Epilepsy (apparently) but this has since been lifted.
Terry