During the cycle path protest, Stella puts her camera in its case, but in the next shot it is back out again.
The Wolverhampton Church Choir are singing music that requires 40 singers (Tallis' Spem in Alium) but there are fewer than 40 singers. Also the sound recording has the choir close-miked and split antiphonally (with the sounds of the sub-choirs coming from different places), but the choir seen in the film are all standing together.