who are all of the drivers?
jim clark, denny hulme, chris amon, jack brabham, pedro rodriguez, john surtees, chris irwin, david hobbs, alan rees, guy ligier, bob anderson, graham hill, mike spence, dan gurney, silvio moser, jochen rindt, jackie stewart, bruce mclaren, jo siffert, jo bonnier, piers courage
of those, which were in the top 6?
jim clark, denny hulme, chris amon, jack brabham, pedro rodriguez, john surtees
now, along with jim clark, which other player was british?
john surtees