Go to the ofsted website and put in your post code a list will come up of your nearest pre-schools. Also chat to your health visitor they will know of good ones in your area
If you get in touch with the council they will give you a list, You can then 'google' them and read their OFSTED reports.
Go to: http://www.childcarelink.gov.uk/index.as...
Then you can try looking on the ofsted.gov.uk website to check the quality of care and education in the settings.