An election agent fell victim to an attempted iPhone robbery by a thief riding a “Boris bike” as she was out on the campaign trail on Monday.

Police were called after the agent for Nigel Rumble, who is standing as an independent candidate in Belsize, was targeted at 8pm.

Mr Rumble said on his blog: “Fortunately, she being a New Yorker and well aware of her surroundings, prevented the robbery. “The would be assailant made off at high peddling speed on the ‘Boris bike’ in the direction along Belsize Park towards Swiss Cottage.”

He added: “Naturally, we called it an evening after that experience and went for a relaxing Earl Grey!”