Wen George is trying to lay the table, in one scene he has his glasses on top of his head - then it moves to another view where he is wearing them.
In the first series, Annie's grave is shown near the edge of the graveyard under a tree; however, when her grave is shown in this episode, it is in the center of the graveyard and the tree has gone. The wording on the gravestone itself is also different and a flowered etching has been added above Annie's name.
When Mitchell leaves the house for the meeting, he turns a corner into a street where several extras are waiting for their cue to start walking.
Mitchell enters the pedophile's flat without being invited.