When Joe is talking to Daisy in the kitchen, the position of Joe's arms varies between shots.
In shots looking downstairs to the handcuffed Daisy, the lodger's position varies between left shoulder forward to the camera and right shoulder forward.
(at around 24 mins) The Lodger (Ivor Novello) and Daisy (June Tripp) are playing a game of chess. The chess board is set up incorrectly, as the bottom-right square is black. This is most obvious when The Lodger is poking the coals in the fireplace.