New this month Continuity mistake: When Dalek Sec tells the Doctor, "The Cult of Skaro escaped your slaughter," the Doctor is lowering his chin. In the next shot, facing the Doctor, as he asks Sec how they survived, he still has his chin raised and head tilted back.
Continuity mistake: When Martha is searching for 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 Dalekanium. 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.