This screening information is from last year - this year it doesn't appear to be happening due to The Shed. http://www.nationaltheatre.org.uk/shows/films-on-the-flytower
Films on the Flytower
Time Out says
Posted: Thu Jun 13 2013
A short season of free films to be projected on the side of the National Theatre's Flytower on the South Bank. It's part of the summer's Watch This Space festival, which also includes comedy, acrobatic performances and live theatre.