Complex sentence: The production was originally set up at Columbia Pictures in 1987, when David Puttnam ran the studio, however when Puttnam was ousted, Loach had to find new financial backing, and eventually found it with John Daly who ran Hemdale Film Corporation.
Split into simpler sentences: The production was originally set up at Columbia Pictures in 1987, when David Puttnam ran the studio. However, when Puttnam was ousted, Loach had to find new financial backing, and eventually found it with John Daly who ran Hemdale Film Corporation.