There are various ways to save on childcare costs, one new one and one which is closing soon.
First: have you taken up Childcare Vouchers with your employer? If these are on offer and you are employed they can save you 32%. Act now, though, and this scheme closes 5th April.
Second: there is a new Tax Free Childcare scheme where for every 80p you pay in the Government tops it up with 20p.
There are pros and cons to each scheme so read this infographic from Money Saving Expert to see which will work for you: