of prominent motor-racing engineers made careers at TWR, including Roger Silman (Operations Director); Tony Southgate (engineering director) and Ross Brawn (engineering director). Ian Callum was design director from 1991 to 1999. TWR was also associated with Peter Stevens, who was a director of TWR Design and designer of the Jaguar XJR-15. TWR in Formula One Tom Walkinshaw Racing was involved in Formula One from 1992 to 2002. At first, Walkinshaw became Benetton's engineering director, and was instrumental in developing the car that took Michael Schumacher to his first World Championship title in 1994. A falling out with Benetton boss Flavio Briatore saw Walkinshaw move to a position as team manager at Ligier, which had been acquired by Briatore. After a failed attempt at purchasing Ligier, Walkinshaw instead bought a majority stake in the Arrows in 1996. The following year, Arrows surprised the world by signing World Champion Damon Hill and introducing Bridgestone tyres to Formula One. Although the team nearly won the 1997 Hungarian Grand Prix, Arrows continued to have trouble attracting sponsorship, and following the liquidation of Arrows, TWR being the major shareholder of the outfit, soon followed suit, closing its doors in 2002 with no major success with the team. TWR Australia was quickly acquired by Holden. The TWR technical centre at Leafield was sold and would later become the headquarters of the now defunct Super Aguri F1 and later Caterham F1 teams. Vehicle engineering TWR created 'TWR Sport' in 1984 to develop heavily modified versions of the Jaguar XJ-S. Designated XJR-S, the cars benefited from the racing experience in European Touring Cars, featuring improved aerodynamics; uprated suspension and brakes; tuned engine and detail changes. The success of TWR Sport led to the formalising of a joint venture (50/50) in 1988 called 'Jaguar Sport'. Jaguar Sport would initially focus on building tuned versions of Jaguar road cars (the XJR-S coupe and XJR saloon). However, with overwhelming demand to put the concept Jaguar XJ220 into production, it was decided that Jaguar Sport would design and develop the new sports car, for which a new facility was secured at Bloxham, Oxfordshire. Production commenced in 1990 and continued til 1993. Following TWR's success with Jaguar at Le Mans in 1988, Tom Walkinshaw had been pressed by a number of wealthy enthusiasts to build them a road legal version of the XJR-9. He decided (initially outside of Jaguar's knowledge) to put a