Why were you revoked?
You mean the DVLA revoked on medical grounds?
Well, it doesn't matter whether you were aware or not.
The point is that you were revoked. If you were revoked and you were trying then that is driving without a licence and that will invalidate your insurance.
You are not disqualified so it is not as bad as it could be. But you were revoked.
It is an offence of strict liability so if you were revoked then there is no defence.
I would plead guilty to reduce costs.
It will only carry points and a fine. Although the costs order will be much higher if you contest this and lose.
Can I clarify anything for you?
No, it is not an issue in the case really.
There is just one issue and that is whether you were revoked.