Knights &amp; EmeraldsKnights &amp; Emeralds Knights & Emeralds Knights & Emeralds is a 1986 British drama film written and directed by Ian Emes. The film stars Christopher Wild, Beverly Hills, Warren Mitchell, Bill Leadbitter, Rachel Davies and Tracie Bennett. The film was released by Warner Bros. on 11 October 1986. Plot. In Wolverhampton two rival marching bands compete, while the teens within them have rivalries of their own, some racial, some sexual.. Box office. Goldcrest Films invested £1,113,000 in the film and received £340,000, losing the company £773,000. Knights & Emeralds Knights & Emeralds is a 1986 British drama film written and directed by Ian Emes