Decided to write this post/explanation up for those who may not think to check the DirectGOV website first etc, as this is a truck forum it would be information you would expect to see anyway.
If you passed your Car test, which is Category B, before the 1st of January 1997, you will have the entitlement to drive a 7 and a half tonner (7.5t) also know as Category C1. This is a vehicle weighing between 3,500kg and 7,500kg. You can also tow a trailer while you’re driving this vehicle, but the trailer must not exceed 750kg.
If you have C1E on your license, then this basically means that you can still drive a vehicle weighing between 3,500kg and 7,500kg but you can tow a trailer heavier than 750kg. The total weight of the vehicle and trailer together can’t weigh more than 12,000kg.
The weight of the trailer when fully loaded cannot weight more than the unladen weight of the vehicle.
C1 - Vehicles weighing between 3,500 kg and 7,500 kg, with or without a trailer - weighing no more than 750 kg
You can drive this vehicle at 17 years of age if you are a member of the armed forces, otherwise the standard age is 18.
C1E - As category C1 but with a trailer weighing more than 750 kg. The total weight of the vehicle and the trailer together can’t weigh more than 12,000 kg. The weight of the trailer, when fully loaded, can’t weigh more than the unladen weight of the vehicle
You can drive this vehicle at 17 years of age if you are a member of the armed forces.
Age 18 if you got your driving licence before 10 September 2009 and the weight of the vehicle and trailer together is under 7,500 kg. Age 18 if one of the following apply:
- you have passed your driving test and Driver Certificate of Professional Competence (Driver CPC) initial qualification
- you are learning to drive or taking a driving test for this category or Driver CPC initial qualification
- you are taking a national vocational training course to get a Driver CPC initial qualification
- you had your driving licence before 10 September 2009 - you must take the CPC periodic training within five years of this date
If none of these apply, the minimum age is 21.
C - Vehicles over 3,500 kg, with a trailer up to 750 kg.
You can drive this vehicle at 17 years of age if you are a member of the armed forces.
You can drive this vehicle at 18 years of age if one of the following apply:
- you have passed your driving test and Driver CPC initial qualification
- you are learning to drive or taking a driving test for this category or Driver CPC initial qualification
- you are taking a national vocational training course to get a Driver CPC initial qualification
- you had your driving licence before 10 September 2009 - you must take the CPC periodic training within five years of this date
If none of these apply, the minimum age is 21.
CE - As category C but with a trailer over 750 kg
You can drive this vehicle at 17 years of age if you are a member of the armed forces.
You can drive this vehicle at 18 years of age if one of the following apply:
- you have passed your driving test and Driver CPC initial qualification
- you are learning to drive or taking a driving test for this category or Driver CPC initial qualification
- you are taking a national vocational training course to get a Driver CPC initial qualification
- you had your driving licence before 10 September 2009 - you must take the CPC periodic training within five years of this date
If none of these apply, the minimum age is 21.
It is also worth mentioning that these rules are changing in January 2013, so you can visit this link for more detailed information on the category that you are taking a test or training for. direct.gov.uk/en/Motoring/Dr … /DG_201206
Source of information is from the directgov website, most of what you see here is copied and pasted from that website and I do not claim it as my own, this is simply a guide for those who come looking for it.