Nicholas Soames, grandson of W.Churchill, said JRM "is an absolute fraud, he is a living example of what a moderately cut double-breasted suit and a decent tie can do with an ultra-posh voice".
You can tell JRM is new money by the formulaic way he dresses and his eccentric choice of words, even his childrens' names. He tries too hard. Old money types don't care what others think of them. With Mogg it's an obsession, a 24/7 cosplay. He thinks he's special because he says "vassall state" every time he talks about Brexit.