left Cosworth in 1998 and founded Integral Powertrain Ltd with three of his Cosworth colleagues. Death Duckworth died in Northampton on 19 December 2005. References Further reading Robson, Graham (2003). Cosworth: The Search for Power. London, Haynes Publishing Group, . People from Blackburn 1933 births 2005 deaths British automobile designers English motorsport people Formula One engine engineers People educated at Giggleswick School Alumni of Imperial College London English mechanical engineers Sportspeople from Yorkshire