Often with questions like these, people use their own experiences to illustrate the lack of (in this case) liberalism in the country. I’m going to do the opposite. This won’t be an answer with figures and alternative models behind it, but it’s this personal experience that motivates me to fight for the Liberal Democrats.
I was brought up in a regular middle class household; both my parents had secure jobs and owned their own house (albeit with a mortgage). My parents were from working class families who struggled to make ends meet, but they were classic examples of showing hard work pays by securing places at university and then respectable careers as a classical musician and in the civil service.
Because of this stability and complimentary working hours, they were both able to encourage my intellectual interests and support me in my work. This meant I secured a place at a great state secondary school in London, and then a place at Oxford University.