Jack Rex Lewis was born on 1st November 1936 in Stroud, Gloucestershire to Welsh family. His father, Jack senior had raced motor cycles prior to the war and junior grew up around bikes. Jack attended the Cooper Racing School at Brands Hatch and they bought Ivor Bueb's Cooper Mk IX (see note below) for the 1958 season with Jack quickly showed promise, winning at Full Sutton in May, Oulton Park in June and again in July. He was well placed in the Commander Yorke Trophy at Silverstone in August until a problem with the additional fuel tank, required for this long distance race, intervened.
Buoyed with this initial success, he moved into Formula 2 with a Cooper T51 for 1959 and was soon on the pace, winning at Montlhéry and finishing fourth at Pau. More good results followed in 1960 resulting in the British Formula 2 title.
Jack moved up to Formula 1 as a private entrant, under the family H and L Motors banner and later Ecurie Galloise, with a BRM which proved disastrous and was quickly returned. He competed in a total of ten Formula 1 races with some creditable performances but quit racing at the end of 1962 to take up farming.
There is an interesting 2006 interview with Jack Lewis here: http://www.gpfactsandnumbers.com/home/wp-content/uploads/2014/06/Jack-Lewis-2006.pdf in which he explains his “Welshness”, or lack of it.