Hi, thank you for your question. Just a bit more information required to fully assist you:
-How old are the children and is he named on their birth certificate?
-What are the arrangements for contact?
-Have social services indicated their position and what they plan to do?
Thank you for confirming. As he is named on the birth certificate he has parental responsibility and the mother should have consulted him regarding the move. Given that she has just picked up and left without notice or agreement he should consider urgently applying to court for a specific issue order (to return to the area) and enforcement of the child arrangement order. This can be done using form C100 (and a £215 court fee) and form C79 (and a £155 court fee) respectively. Given the urgency he can attend court in person and ask for a without notice hearing to go before a judge the same day.
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