You need to get in touch with a lawyer who specialises in family matters URGENTLY ! In a case like this where the safety of a child is at stake you can get legal aid . But HURRY, only 1 side in a custody case can get legal aid. If your wife gets it first that's it, you are on your own. I had a similar situation in my own family. We got legal aid, just as well. If it had gone to court it was £10,000 cash up front for a solicitor just to prepare a case! Get a solicitor DO NOT let your son go into court without one!