Continuity mistake: Joe comes in to the close and bangs on the first door on the left, we can see a railing just outside the close door. His football team comes jumping out the windows of the flat on the right and when they return, the railing that we saw before is gone. (00:02:50)
Continuity mistake: When Sarah comes in with the tea and biscuits for Joe and Shanks, the amount of ceiling that Shanks has painted changes between shots without enough time for him to have done it. (00:17:50)