License needed to drive a Classic Truck or Bus

Finding it hard to find a correct answer anywhere at moment so hoping someone can help.

I have been told that I can legally drive a classic preserved Truck or Bus on a normal car license as long as the vehicle is over 30 years old and is not for H&R and not carring more then 8 people?

This was told to me by a member of a bus presevation group.

Link:

direct.gov.uk/en/Motoring/Dr … DG_4022619