Hi Marne. I'm in Broadstone. Poole Borough Council have a Children's Information Service and they sent me a leaflet with all the local groups. Maybe your equivalent, wherever that is, will have the same, or perhaps the people in Poole can tell you who to contact?
Local library or look at church noticeboards ?
or this site has listings for which you can search by postcode for playgroups, childminders, nurseries and Toddler groups, although may not be comprehensive.