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I am a Solicitor and will assist you.
I am sorry to hear what is happening.
It is the position of the courts that children are entitled to a really good relationship with both of their parents as long as there are no child protection concerns. A court would be concerned of the children were removed from their home without a home to go too or if the mother attempted to take the children out of the jurisdiction without the permission of the father.
If the father considers that the mother is actively making plans to remove the children out to effectively become homeless or to a different jurisdiction then the father can make an urgent application to his local family court for a Prohibited Steps Order to prevent the mother from taking such action.
If the mother did remove the children from the home and they were effectively homeless or out of the jurisdiction then the father could apply urgently to the family court for an order for the children to be returned.
In both situations the court will likely make the order int he first instance whilst the circumstances in relation to the mother are investigated. If the mother obtains suitable accommodation and there are no other concerns of a child protection nature then the court would want to promote the relationship between the children and both parents. If the mother had attempted to or actually removed the children from the jurisdiction then she could be charged with child abduction and if found guilty sent to prison.
Normally all children matters need to be referred to mediation before an application can be made to court. There are independent and try to reach resolution between the parties without the need for court. However, in urgent cases where there are plans to remove the children and make them homeless or to a different jurisdiction then urgent applications can be made to court and dealt with very quickly in relation to listing the matter for an urgent hearing by the court.
The father would apply to court on Form C100 in relation to any children matter. The court fee is £215. In an urgent case he can take the completed form straight to his local court and ask to be heard by a Judge asap.
It is wise to also take preventative measures such as securing the children's passports.
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