This varies from Borough to Borough - your best bet is to contact your local Childcare Information Service or your local Council and they should be able to point you in the right direction.
i think you will find if you want to run your own business you take the rough with the smooth! when we didn't have many cms there were incentive schemes to increase them but on the whole LAs have ended that. It is however an incentive to run your business well and be on top of contracts etc.