The Main Chance (1969)

Maverick lawyer David Main (John Stride) commutes between his twin bases in London and Leeds. His seemingly devil-may-care attitude is contrasted with the steady and cautious approach of his crusty Leeds partner Henry Castleton (John Wentworth). However, Main's relentless pursuit of material and career success is tempered by his desire to champion the underdog, for whom he feels an occasionally grudging kinship.