Driving while unfit through drink or drugs
This is a similar offence to driving with excess alcohol. The difference between
the two is that, to be charged with driving with excess alcohol, a specimen
declaring you over the drink drive limit is required. If they do not have a
specimen, for whatever reason, they can simply charge you with driving while
unfit under the influence of drink or drugs and the prosecution would centre
around a doctor's or police officer’s opinion of your suitability to drive.
What are the punishments?
You could face a driving disqualification, six months imprisonment to a fine up to £5000.