mobile_carrot:
Much as I disliked Margaret Thatcher, the fact that a grammar-school educated GIRL could be leader of the Conservative Party, supposedly the bastion of white male privilege, probably gave these schools a kick and ensured they took education seriously and they actually began to give up corporal punishment before many state schools because they wanted to attract bright kids who could get good results and not just the thick aristocracy.
I am still a big fan of Maggie and have been since I stopped supporting Labour during the Callahan years.
Whilst the old school tie thing existed in Whitehall up until Thatcher it was largely based on the traditions within the Civil Service, but by the 1960s those schools were producing an out of date product that was failing in the workplace.
In recent years those private schools have revamped themselves and now produce a very good product, but this elitism is not unique to the UK. It happens in all countries, and as we can see no matter what the political preferences are, Left or Right, nepotism and private education are still the name of the game. Most parents will by instinct try to give their kids advantages over others.