DVSA, will ADI’s be able to train learners in this type of vehicle combination soon?

DVSA Please let me train learners in this vehicle combination!

Today the DVSA announced that professional driving instructors will be permitted to teach learners how to use the motorway providing that the car is fitted with dual controls.

Towing trailers is part of the DVSA syllabus yet it is illegal for learners to tow one.  Even a tiny trailer can pose a considerable danger if it is not correctly coupled to the towing vehicle.  Some instructors have cars fitted with tow bars in addition to the dual controls.  Please DVSA,  could those instructors be permitted to teach the safe way to operate a trailer? You cannot possibly allow them to pull combinations weighing up to 3.5 tonnes without some kind of instruction!