Thanks that is really useful. I will speak to a gp first to find out how to set it in motion and how to discuss it with dd.
With strangers at cafes etc she is a real chatterbox! She will talk to anyone and everyone and will initiate conversation. It's around other kids that she doesn't join in and her teacher tells me that she always wants to help the teachers, hold their hands and when they try to encourage her to play with the kids she shies away and ends up walking around on her own. She parallel plays rather than joining in.
In the childcare environment I wasn't concerned as I knew the teachers could give her enough attention but at big school I know she won't have that.