Oh you really don't know me at all! 
Firstly, my point was to illustrate that the argument that sending your child state ensures a good social mix isn't the case in all areas.
I have absoluetly no issue with state schools whatsoever as a principle. I have taught in them for 20 odd years! When we first moved down here to Sussex from Cheshire my children went to the local state primary because I was very unimpressed by our nearest independent school. Fur coat and no knickers as they say where my DH is from. Which incidently is an estate in Glasgow called Easterhouse, a notorious slum if ever there was one! So neither of us are what you seem to have in your head as Surrey/Cheshire people!
But yes, DH earns a lot of money and yes, we are very fortunate to be able to live in very lovely parts of the country even if his job does take him out of the country altogether for weeks at a time.
But a snob I am not. I don't give a fig about keeping my kids away from those less forunate or about any perceived networking that supposedly goes on in some public schools. I am more than happy that a large chunk of my fees goes towards providing bursaries so that bright kids who would not otherwise have the same opportunity, do so.
I know, as a teacher, that young children do better in small classes with state of the art facilities to enhance their learning. I know that the range of opportunities they will get on a daily basis in a good private day school will always outstrip what the state can afford. I am lucky enough to be able to afford to provide that daily experience for them so I do.
Is it fair that my children get this experience when so many other do not? Of course not! But neither is it fair that they have 3 holidays a year and an acre of garden to run around in. It is and will continue to be very much part of my parenting role to ensure that they grow up fully aware of how privileged they are and never to consider themselves better than anyone else based of something as shallow as where that person went to school.