A special screening of Alfred Hitchcock’s 1929 silent classic film Blackmail, accompanied by the Forest Philharmonic Orchestra.

There will also be street food and drink available, courtesy of Real Food Festivals.

Walthamstow Assembly Hall, Forest Road, Walthamstow, Friday, July 25, 7.30pm until 9.30pm. Details: 020 7638 8891, barbican.org.uk/music