The Human Rights Act says of education:

No person shall be denied the right to education. In the exercise of any functions which it assumes in relation to education and to teaching, the State shall respect the right of parents to ensure such education and teaching in conformity with their own religious and philosophical convictions.

Personally, I have a deep philosophical conviction that the state should play no part in the education system - standard liberal stuff, per JS Mill. Unfortunately, because the state takes lots of money from me to pay for the education system that I oppose, I am unable to send my children to private school. So it looks to me as if the state is not only not respecting my right to ensure an education in conformity with my convictions, it is actively preventing me from doing so.

The remedy is simple though. I want my money back. Cash or voucher, I care not.