Hi, thank you for your question. Just a bit more information required to fully assist you:
-Are you in England or Wales?
-How old are the children and are you named on their birth certificate, or were you married to the mother?
-What have the arrangements been so far for contact and have you taken them abroad previously?
What are your costs and where are you planning to take them during half-term?
Unfortunately, if there is no court order in relation to contact there is no enforcement option for you. The only thing you can consider is issuing an urgent application for a child arrangement order under form C100 and a £215 court fee tomorrow in person to your local family court - however, the court will likely wish to hear from the mother before making a final decision.
If such a route does not settle the matter and you lose out, then this can be pursued as a small money claim against her here: https://www.gov.uk/make-money-claim-online You should initially send her an urgent letter/email threatening this course of action.
In relation to her travel with the children, you can object to them being removed from school if this will impact their education. However, in relation to the travel abroad for holiday, your consent can only be reasonably withheld - so if there are concerns of abduction or safety abroad, then these are reasonable concerns but otherwise a prohibited steps order for them to go on holiday will unlikely be granted by a court.
If you have any further questions regarding this please let me know. In the meantime if you found this information helpful please provide a positive rating using the stars at the top of this page. I will not be credited for answering your question without a positive rating. Thank you
I hope this assists you. If you found this information helpful please provide a positive rating using the stars at the top of this page. I will not be credited for answering your question without a positive rating. Thank you