Spook yourself with horror film classics (the Exorcist, the Blair Witch Project, Halloween) screened inside a church.
Runs from today until 31 October. The Round Chapel, Hackney.
• Clapham Party Store
Need Halloween fancy dress? Pop down to the much loved store, which has reopened after it was burned down during the riots in August. It also has a pop-up concession at Debenhams, opposite.
• Kids Halloween Day at Canal Museum
Blood-curdling story-telling and face painting are among the Halloween activities at the Canal Museum. Events run until 9pm.