I wish to get in ontact with my daughter which I haven't seen since she was 18 months old she is now 23 and I would like to make contact how do I go about finding her.I really haven't tried anything yet just need a place to start

Put her name into Google to look for a Facebook entry. Searching in Facebook directly isn't as easy as it used to be.

Are you in contact with the mother at all? Other relatives of the mother? Relatives would be where I would start. Then just searching on her name would be next.

You need to be prepared that she will not want to have contact with you at all.