Complex sentence: Now at racecourses in the south East, one group the Brummies began to prey on were the Jewish bookies from London's East End, who turned to local underworld boss Edward Emmanuel, who in turn recruited the Italian Sabini Gang as protection.
Split into simpler sentences: Now at racecourses in the south East, one group the Brummies began to prey on were the Jewish bookies from London's East End. They turned to local underworld boss Edward Emmanuel who in turn recruited the Italian Sabini Gang as protection.