Oh God, here we go again! You have just turned up another poss problem Tony! I have C1E but renewal and med is every three years. However, from the silly picture on the licence, it seems that this group is for a ridged, with trailer. CE, on the other hand appears to be an Artic unit and trailer! Looking at that it would seem that C is the old class 2, and CE the old class 1.
Was a lot simpler then Harry. Up to 7.5 tons on a car licence.
Class 3 was a 4 wheeler, Class 2 was a 6 or 8 legger and class 1 was an artic. Then we got all the rollocks of the new Unified Licence, all in order to come in line with Europe. C takes over from 2 and apparently 3 but ever since the change, CE has been the old class 1, distinct by semitrailer. I think C1E applies to drawbar trailers.
When I started if you had a car licence you could drive HGV's on motorways with just a provisional entitlement whilst you were learning, provided you were supervised by a driver who had been qualified for more than 3 years.
At one time there was no requirement for HGV examiners to have actually passed a HGV test, indeed one here at Wetherby never did.
At one time you could be a 'Double L' in a HGV, drive on a provisional with provisional entitlement for a car, pass the 1 test and it covered you for both the car and the class 1
C1 came in as part of the staging process that young drivers now have to go through to get a class 1. There also used to be a young drivers scheme. Others might be better placed to comment on that than I am.