Continuity mistake: As the scarecrow-soldiers advance on the school to do battle, the scene cuts to Sister-Of-Mine, looking out from a school window. There is heavy rainfall outside. When we immediately cut back to the advancing scarecrows, it is a cold, clear night.
Continuity mistake: When Lawrence is watching the weeping angel, just after seeing the Doctor's film/easter egg, he turnes away for a split second. By the time he turns back, you see the weeping angel's face only inches from Lawrence's face. Yet, you then cut to a wide shot were you see the angel's arms outstretched, so its face is about half a metre away from Lawrence's face.
Continuity mistake: When the Master stands up on the Valiant to announce that he is "the Toclafane's Master", President Winters is visible in the background, only the Toclafane aren't there. In the next shot, they return, buzzing around Winters' head.
Continuity mistake: When Martha is searching how the daleks changed the design of the Empire State Building, she is examining the plans for the top of the tower. In the first shot where the new plans are visible, the upper right shows a more detailed picture of a plate of dalek armour. Seconds later, when we can see the new plans again, it's the same side view but the enlarged picture of the plate with the dalek bumps is gone. These are still the same new plans (the old plans are on her right) and there was no time or reason for Martha to take another page.
Continuity mistake: When Sally Sparrow is about to take the key from the weeping angel, at first the key is on a piece of string, and that string is wrapped around the weeping angel's left hand. In the next shot, and when she pulls the key out, the string is now only in the angel's palm.
Continuity mistake: When Timothy opens the watch into the girl's eyes, Jeremy Baines shouts "Timelord", then a few seconds later; "What are we waiting for. ATTACK!" There is then a shot looking down on the scarecrows, Jeremy and Jenny. If you look closely at Jeremy Baines, it's a different actor playing him.
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