When Nessa is showing Smithy's present for Neil the Baby to the others in the room, the position of her hands on the shirt change between the wide shots and close-up.
As Pete brings his mum in to the living room, Dave is seen holding a plate of food which is immediately followed by a shot with his hands in his pockets.
Trees are shown in full leaf when they should have dropped off well before.
Just after Brynn is singing Chris Rea on the bus, the camera cuts zoomed in on a Christmas tree ball, a camera man is reflected in it.