[Solved] What to do next?

Hi

I'm writing for some advice for my son, who seems to be reluctant to do anything constructive since he seperated from his wife in mid July.
He instigated the seperation, and relationships with his wife have been very up and down ever since, and has this week broken down completely.
They have a one year old daughter and his visits to her have been on the basis of about an hour or so a week, always with his wife present in spite of him asking for time on his own with her. These visits usually ended up as an opportunity for argument and he spends very little time actually seeing his child. She point blank refuses to allow him to have her on his own, using the fact that he is "seeing" a woman who has a daughter which she says is on the at risk register as her reason, she is protecting her child. He previously looked after their child before the break up whilst the mum worked evenings and weekends, so she knows he is more than capable. Visits had never involved the "other woman".
After a particularly acrimonious argument this week, she has refused all contact with their daughter, stating she will not allow him to see her unless he gets a contact order.
She is refusing to answer texts and phone calls. He is aware that she is currently looking for accomodation ( she is staying with family) and he is worried that she will carry out her threat to move and not tell him where his daughter is.
I took him to see a solicitor on a fixed fee basis when they first split up to see what his legal obligations were, but all she really advised on was divorce and he wasn't at that stage at the time.
Where does he go from here? He has been to the CAB, but they can't help because his wife had already been to them for financial advice.
I don't seem to be able to get him to deal with anything officil himself, he is so wrapped up in missing his child.