The threat of terror returned to London today after a car bomb was found outside a West End nightclub. The apparent target was Tiger Tiger in Haymarket, where up to 1,700 people were inside on 'ladies night'. It is feared the attack is the work of Al Qaeda militants, who plotted a similar attack on the capital's Ministry of Sound nightclub and Bluewater shopping centre. The British-born Al Qaeda gang was jailed last month. One witness described seeing a green gas cylinder in the boot of the car, believed to be a silver Mercedes, which probably contained explosives. The boot...