Cinemas in the UK will be marking the 40th anniversary of the release of Monty Python and the Holy Grail with special one-off singalong screenings in 500 cinemas. The events will take place across the country on Wednesday October 14.

The screenings will be accompanied by a specially filmed exclusive introduction from Terry Jones, Terry Gilliam, Michael Palin, Eric Idle and John Cleese.

Today, October 7, there will be a procession of knights through London to mark the film's birthday.

To find your nearest cinema click here.