Continuity mistake: When Jeremy is pursued by Edward inside the house, they both fall on the floor with lots of papers and books around them. As Jeremy gets up and Edward holds on to Jeremy's legs, there's almost no paper around Edward on the floor. When it cuts to Jeremy kicking him, he is surrounded by papers and books on the floor.
Continuity mistake: When Reece and Mark realise that the characters from Roystone Vasey have come into their world, they kidnap Herr Lipp and drive to Hadfield in a Ford Galaxy, but the shots of them driving down the motorway are of a Vauxhall Zafira. However once they arrive at the church, they are once again in a Ford Galaxy.