This is in light of the 2003 Judicial Protocol signed by British and Pakistani judiciary officials in agreement that any abducted child should be returned to the country usually resided in and the court of that country should decide which parent the child should live with.
Due to a 2003 agreement between British and Pakistani judiciary officials, any kidnapped children must be sent back to their home country, and the court of that nation will determine which parent the child should reside with.