As an ex council house kid living in a run down part of the country in the 1950s, with poorly educated parents who left school at 14 and who both worked in factories as there was no other choice, it was my privilege to pass to go to my local grammar school. It changed my life and made my family very proud and I have done well since, now owning a nice home outright with a good lifestyle in a lovely part of the country.
My two children both went to comprehensive schools and had a rubbish education even though they managed to be in the higher sets for most subjects. They also had one year in a posh private school when we lived abroad, paid for by the company my husband worked for . I think there is a place for private, grammar, technical schools and GOOD comprehensives. One type of school shouldn't need to exclude the other.
I assume all the socialists who are against private education and selection wouldn't be so hypocritical as to want to live in the private sector in a nicer part of town thenselves!!
To think that London, or anywhere else for that matter, does not belong to any one demographic