To us nothing has changed. But from 2013 anyone that passes their test can now tow more then 750 as long as both are under 3500kgs.
Just looked at a MK4 wagon, has a braked towing of 1500KGS. Should be enough for most hatchbacks + trailer? That's all I really deal with in all fairness. The GTI according to Parkers is 1070KGS.
This is all confusing. Wonder how much insurance is on a Rav4 or something. 
But I passed in 2008, I can tow a trailer over 750kgs as long as it is braked and car and trailer combined weigh less than 3500kgs and the trailer doesn't weigh more than 75% of the tow vehicle, I would only need B+E entitlement if I wanted to tow with a combined weight of over 3500kgs or wanted to tow a trailer that is heavier than the car, so I can't see any change. or have I got it completely wrong?
I've never had a problem towing a trailer, been pulled a couple of times but not even the coppers know what the rules are, so if I'm wrong I've been lucky.