The Conservative candidate for London Mayor has said she was pickpocketed on the Tube on Monday afternoon.Susan Hall says she was shoved and nudged by the thief while she was travelling on the Metropolitan line between Finchley Road and Pinner at about 2pm.The London Assembly member said she noticed that her wallet with Oyster Card and £40 in cash were missing from her pocket when she left the train.Ms Hall said the incident showed crime in London was "out of control".