Twitter users reported seeing a convoy of bomb disposal units speeding through North Harrow.

It transpires the two trucks - potentially Army bomb squad vehicles because police ones apparently do not have identifiers on them - have been travelling down with their blue lights flashing through north-west London and central London en route to a call, possibly in south-east London.

The Metropolitan Police confirmed there is no incident in Harrow and the Observer is waiting to get more information from the Army.