The Home Office has no way of verifying the age of child refugees being brought to the UK, it has emerged amid concerns that adults are posing as minors to gain access to Britain.

Fourteen “teenagers” on Monday arrived in the UK from Calais as a fast-track system was launched to transfer youngsters from the "Jungle" camp before it is demolished.

The Home Office insisted it had “verified” the ages of all the refugees and that all of those who were brought to the UK were aged between 14 and 17.