The Sing-a-long Flash Mob event packed out Trafalgar Square and was T-Mobile's second "Life is for Sharing" event, following on from the hugely successful T-Mobile Dance, held in Liverpool Street Station in January
At 11 o'clock on Thursday 15 January around 350 people broke into a choreographed dance routine in London's Liverpool Street Station for the shooting of a new advertising campaign by T-Mobile.
