I am a step father to a 19 year old girl. I am married to her mother. I would like to adopt her and she wants to be adopted. She is American and has lived here in the UK for 5 years. She hasn't seen her real father since she has lived here, in fact she has only spoken to him on the computed a few times. He has nothing to do with her life at all.

Do we have to have permission from Katie's real father before I can adopt her or is this something she can do, as she is an adult now, on her own will?

Many thanks for your time