The Clapham Junction railway crash occurred on the morning of 12 December 1988, when a crowded British Rail passenger train crashed into the rear of another train that had stopped at a signal just south of Clapham Junction railway station in London, England, and subsequently sideswiped an empty train travelling in the opposite direction. A total of 35 people died in the collision, while 484 were injured. The collision was the result of a signal failure caused by a wiring fault. New wiring had been installed, but the old wiring had been left in place and not adequately secured. An independent inquiry chaired by Anthony Hidden, QC found that the signalling technician responsible had not been told that his working practices were wrong, and his work had not been inspected by an independent person. He had also performed the work during his 13th consecutive seven-day workweek. Hidden was critical of the health and safety culture within British Rail at the time, and his recommendations included ensuring that work was independently inspected and that a senior project manager be made responsible for all aspects of any major, safety-critical project such as re-signalling work. British Rail was fined £250,000 for violations of health and safety law in connection with the accident. Collisions On 12 December 1988 the 07:18 from to London Waterloo, a crowded 12-car train made up of four-car 4VEP electric multiple units 3033, 3119 and 3005, was approaching when the driver saw the signal ahead of him change from green ("proceed") to red ("danger"). Unable to stop at the signal, he stopped his train at the next signal and then reported to the signal box by means of a line-side telephone. He was told there was nothing wrong with the signal. Shortly after 08:10, the following train, the 06:30 from , made up of 4REP unit 2003 and 4TC units 8027 and 8015, collided with the Basingstoke train. A third train, carrying no passengers and comprising 4VEP units 3004 and 3425, was passing on the adjacent line in the other direction and collided with the wreckage immediately after the initial impact. The driver of a fourth train, coasting with no traction current, saw the other trains and managed to come to a stop behind the other two and the signal that should have protected them, which was showing a yellow "proceed with caution" aspect instead of a red "danger" aspect.