Lots of areas of society, private school kids dominate. (media, TV, Politics, many sports).
My own bug bear is in the world of 'adventurers'. It's dominated by ex-public school people.
Of the Radio Times list of the 'Top TV Adventurers' , 6 were public school, 1 comprehensive, 2 unknown and 1 Aussie.
It's a niche field I admit! They are not bad people and certainly work hard, but where are the 'normal' kids?