If you go in for a less refined variety of outdoor festivity, however, then the Holi Festival of Colours is the party for you this weekend (12 September). Inspired by the Hindu festival of Holi (which usually takes place in March), but with an entirely secular bent, this event sees revellers flock to Queen Elizabeth Olympic Park for an afternoon of music and ‘colour throwing’. Wear clothes you don’t mind getting messed up, dock your Santander Cycle at Cadogan Close and pelt friends and strangers with coloured powder for all you’re worth. It’s tremendous fun.