Roads chiefs have dismissed claims of a "secret plan'"to line the M20 with portable toilets in the event of a no-deal Brexit as standard procedure.

The Daily Mail revealed how contingency planners are preparing for a 13-mile-long 'Brexit stack' on the southbound carriageway of the M20 by lining it with portable loos.

It the event of a no-deal scenario, border checks with the EU could be re-imposed.

This could lead to a 13-mile queue on the motorway, known as Operation Stack.

Operation Stack is a procedure used by police as a way of managing traffic during times when there is disruption to Eurotunnel or ferry services in Folkestone or the Port of Dover.

It allows lorries to queue on the motorway while they wait to use the services and was last used in 2015.

A spokesman from Highways England said: "There is no secret plan to put toilets across the M20.

"It is standard procedure to put toilets down in the event of Operation Stack, as we did in 2015.

"There are currently no toilets out there and we have no plans to put any out."