1964 saw the first Formula One race at the southern English circuit known as Brands Hatch, located in Kent, just outside London. The track was built in the early 1950s and had been extended in 1960. Silverstone hosted the British Grand Prix in odd-numbered years and Brands Hatch in even-numbered years. Like Silverstone, the circuit was popular with drivers, and unlike the flat Northamptonshire circuit and Aintree, Brands Hatch had many cambered corners and varying elevation. Like the year before at Silverstone, Clark won the 1964 race and the next year's race. 1967 saw Clark take yet another dominant win, and 1968 saw a monumental battle between Swiss Jo Siffert in a Lotus and New Zealander Chris Amon in a Ferrari; Siffert won the race, his first of two victories in F1 on the circuit where he would lose his life in a non-championship race three years later.