Police have slammed a “dangerous” stunt by two teenagers who “risked their lives” as they leaped from a DLR train into the Thames.

Shocking footage which shows two teenagers climb onto the roof of the train at Heron Quays station, in east London, was posted online by Youtube prankster Rikke Brewer on Monday.

The two-and-a-half minute long clip, filmed from outside the train, shows Rikke and an unnamed friend ride on the top of the driverless train as it speeds through Canary Wharf.

The duo then leap from the roof of a carriage as it passes over a bridge above the Thames.

They drop several metres into the water in front of stunned diners sitting outside a Café Rouge restaurant.

British Transport Police officers are filmed appearing to chase the teenagers who flee, dripping wet, into a nearby shop.

Rikke, who has previously been filmed climbing the Blackpool Tower and Twickenham stadium, in south west London, claimed the reckless stunt was his “biggest yet”.

He later urges viewers not to copy his actions but insists it was “insane”.

BTP branded the pair’s actions “dangerous” and “illegal” as it confirmed an investigation had been launched.

A spokeswoman told the Standard: “We completely condemn the dangerous actions of these two boys. They risked their lives and the lives of others for the sake of a YouTube video.

“Our officers have experienced first-hand the devastation that families are left with when a loved one is killed or seriously injured on the railway.

“Behaviour such as this is not worth the risk.

“We are currently in the process of making enquiries regarding this video and the illegal actions of the two people who so-called ‘train surfed’ on top of the DLR train.”

Anyone with any information should text 61016 or call 0800 40 50 40 quoting reference 227 of 06/09/2017.