The extraordinary moment Hillary Clinton's security staff got into an argument with a traffic warden in London after he issued her a parking ticket

Argument: Hillary Clinton's security staff get into a row with a traffic warden whilst waiting for her in London

She had earlier arrived in a motorcade of five cars with around 10 security agents, Mr Brennan told MailOnline. Her car was parked in a bay on St James's Square in Mayfair, which costs £3.30 per hour.

The warden then arrived and put a ticket on the car which had transported 65-year-old Mrs Clinton to the event, prompting her security detail to jump out of the van in protest, Mr Brennan said.

The photographer claimed he saw one of the agents angrily waving his arms and flashing his badge to the warden, who remained unflustered and continued to issue the ticket to Mrs Clinton’s vehicle.