KENT Police has announced it has gone on heightened terror alert.

A spokesman says that although there is nothing to suggest any specific threat to the county, they are responding to the ongoing national threat.

There is an increased police presence, including some armed officers, at key sites including the Channel ports, Eurotunnel, Manston Airport and Ashford International station.

People in Kent and Medway are advised to be extra vigilant for any suspicious activity and to call the anti-terrorist hotline on 0800 789 321 if they have any information or see anything suspicious.

Major UK airports including Heathrow and Gatwick are experiencing major delays following terror raids earlier today.

At present, 21 people have been arrested in connection with a terror plot to blow up trans-Atlantic aircraft.

The UK terror threat level has been increased to critical' - the highest level.