One of the reasons Luke Treadaway was cast was because he can play guitar and sing a bit himself. That is his actual voice during the busking scenes.
James Bowen:
Okay... look I'll take it
James Bowen:
off... if you promise not to lick the stitches
Bob:
RRRRRR
At the end of the movie, during the book signing scene, we can see the Complete Discworld Atlas of Terry Pratchett behind the father of James Bowen and his wife. It's a mistake: the scene takes place in 2012 and the Atlas was published in 2015.
On the UK release, the British Board Of Film Censors card preceding the feature reads 'A Streetcar Named Desire' briefly, before being replaced by the appropriate card for the film. This may have been a glitch peculiar to the cinema.
English
$8,000,000 (estimated)
$32,887 20 November 2016
$82,703
$16,053,043