May the Fourth Party
Time Out says
There are worse reasons than serendipitous, calendar-based assonance to watch all six 'Star Wars' films in one go - especially for a certain kind of... devotee. In that spirit, the William Morris Riverside Free House in Colliers Woods welcomes fans to its secret cinema May the Fourth Party, starting at 10.30am and lasting till just after midnight.
Show up in costume and you'll get in half-price. Show in a good one and you might win a prize. Padawans (that's Jedi for 'kids') are welcome, but have to be out by 8pm, meaning no ewok battle scene. Themed food and drink are served throughout the day.