How can I locate my daughter, She is now 21 going on 22 but have hade no contact since she was 3 as her mum never volunteered info on this subject?

Well where did she go to school, how far away do you live from where she grew up. Have you called her mom and just asked. Have you called her moms parents or other family and asked.

Children don't go to school until they are 5 so as stated in my question I don't have any details to help me otherwise I would have found her myself. But thank for your response.