Climate change protester Leila Deen has been arrested following an incident in which Business Secretary Lord Mandelson was covered in green custard.

The Hackney-based campaigner attended a central London police station on Saturday in relation to the attack.

Scotland Yard confirmed that Ms Deen, 29, visited the station this weekend “by arrangement”.

A spokesman said: “Leila Deen was arrested by officers from Westminster CID and was bailed to return to a central London police station on a date in early April.”

A cup of vegan custard was poured over Lord Mandelson as he arrived at the launch of a low-carbon summit in Westminster on Friday. The custard had been dyed green with food colouring.

The police are not obliged to investigate an incident of this kind unless a formal complaint has been made.

The eco-warrior said afterwards that Lord Mandelson was targeted because of his support for a new runway at Heathrow airport. Lord Mandelson has described the attack as “adolescent”, and said the custard left him with a “slight irritation” on his face.

Ms Deen has been released on bail until April 9.

Thumbnail image taken from Ian Kershaw on Flickr.