If you are talking about Brian Cox the physics bloke, they call him Professor because that is his title, he will have done a PhD and become a Dr, then he worked b****y hard, got a promotion and became a professor. It is nothing to do with not getting people mixed up with other people.
No he's a proper Professor bloke, he's a Fellow of the HmmHmmmNaNas and a Member of the HooHooBaBas and all that kind of braininess. I don't think he had any student loans cos he was well rich from his illustrious music career to pay his way through his learning.
MrsRajesh, not a single hair left. I was sold a pup.