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 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.
Add timeProfessor Lazarus