A train driver’s union has called for an “urgent review” of security at depots after a Night Tube driver was assaulted.

The driver, who was stationed at the Stanmore depot, was attacked by a group of men who were “vandalising a train carriage”.

Transport for London’s director of enforcement, Steve Burton, called the assualt "senseless" and "cowardly", stressing that such incidents will not be tolerated.

“We are now doing everything in our power to work with the police to bring the attackers to justice," he added. 

According to ASLEF, the union which represents London Underground drivers, he was sprayed with paint and had his radio stolen during the incident.

Finn Brennan, ASLEF’s organiser on the underground, said: “This incident highlights concerns about the security of depots where trains are left overnight. 

“There have also been recent incidents on the Victoria line. If graffiti vandals can access these locations, there is a real risk that those planning serious violent attacks may also do so with dreadful consequences.”

He added that, when the Night Tube service was introduced, they were assured that additional staff and police resources would be in place for safety reasons.

“Instead, staff have been left alone and vulnerable in dangerous situations. This cannot be allowed to continue,” he said.

Mr Brennan explained how ASLEF’s health and safety representative would be pushing for a review of security arrangements at all depots.

He added that they would demand “immediate action” at locations such as Stanmore where drivers are “particularly vulnerable”.

British Transport Police (BTP) confirmed in a statement that officers attended the scene shortly after 4am on November 5.

The driver did not suffer any serious injuries and did not require further medical treatment after being checked over by paramedics.

“Over the coming weeks, there will be increased patrols by officers from BTP to reassure both the travelling public and staff,” a spokesperson said.

Anyone with any information relating to the incident can text 61016 or call 0800 40 50 40 quoting reference 87 of 05/11/2017. Alternatively, ring Crimestoppers anonymously on 0800 555 111.