Other mistake: Observing the Dalek saucer, the Doctor notes that it seems to be landing in the vicinity of Sloane Square. There is then a lengthy shot in which it is shown to be continuing in level flight for what must be several miles over London (with no apparent intention of landing) before we finally get a close-up of it descending.
Other mistake: At the beginning of the film, when one of the eyewitnesses tries to get into the TARDIS to call the police, when the TARDIS dematerialises, the eyewitness changes position slightly.