A major focus of the current government is to increase competition in education, with free schools and other proposals. However a report from the Organisation for Economic Cooperation and Development (OECD) indicates that increasing parental choice and competition does not significantly improve schools.
Apparently there are no studies indicating that increased competition leads to innovation in the classroom. Indeed the changes they tend to introduce (like uniform, discipline) are more likely to lead to traditional than innovative methods.
Interesting report. Useful summary here