In England and Wales and Northern Ireland Parental Child Abduction may be a criminal offence where a child (under 16 years old) is taken out of the UK without either consent of another person who has parental responsibility, or permission from the courts.
In Scotland, abduction may only be considered a criminal offence where the courts have issued an order concerning custody of the child or their removal from the UK, but a parent may still have rights under civil law.
More top news
Wintry weather into the weekend
Jeremy Hunt could impose controversial new contracts for junior doctors by Monday, ITV News Political Editor Robert Peston has learned.
A new video has emerged online purporting to show a four-year-old British boy blowing up a car and killing three prisoners on behalf of IS.