just to claify the point of towing with or without the + E on your licence i think this makes it abit easier to understand, by the way what caravans are under 750 kgs mam
Car driving licence first obtained since 1 January 1997
Category B+E: Vehicles up to 3.5 tonnes MAM towing trailers over 750kgs MAM
Category B+E allows vehicles up to 3.5 tonnes MAM to be combined with trailers in excess of 750kgs MAM. In order to gain this entitlement new category B licence holders have to pass a further practical test for category B+E. There is no category B+E theory test. For driver licensing purposes there are no vehicle/trailer weight ratio limits for category B+E.
Car driving licence first obtained since 1 January 1997
Drivers who passed a car test on or after 1 January 1997 are required to pass an additional driving test in order to gain entitlement to category B+E and all larger vehicles. In addition to the new driving tests, drivers of vehicles which fall within subcategories C1, C1+E, D1 and D1+E also have to meet higher medical standards.