*Sorry if this is in the wrong section I couldn't figure out exactly where to post it**

Question for anyone who may have the EXACT answer because a few people have givenot me thier options or best guess....
Basically I have got an "A, B1, B and fkp" passed in 2007. Am I right in thinking I CAN drive a transit (or similar size) flat bed recover vehicle without any load but once I load it with a vehicle it has to be under 7.5 tonne?
And also I CANNOT tow a car trailer using a van or car, loaded or unloaded with at all unless I pass a B+E test?