Returning for its fourth year, this arts festival is curated by film director Mike Figgis and brings together myriad  installations, discussions, peformances and interviews.  It’s all very high-minded, taking the pulse of popular culture, but if you get bored, you can always enjoy the spectacular surrounds of the Opera House.

September 2-4. Free
Royal Opera House, Bow St, WC2E 9DD 
roh.org.uk/deloitteignite 
Tube: Covent Garden