A new free online directory has been set up for advertising childcare providers and family services. (It replaces the Family Information Directory which closed recently):

http://openfamilyservices.org.uk/

Lots of Local Authorities have already signed up, you can find who they are here:

http://partners.openfamilyservices.org.uk/?page_id=96

It is all still in the development stage and feedback via the site is welcome.

If your local authority hasn't signed up it might be worth contacting your family information service to request your information be made available.