Continuity: When the Doctor and Rose are talking in the bay, the Doctor's hair is blowing in the wind, but it's not when he is in the T.A.R.D.I.S., even though it's a realtime conversation, meaning the actor was obviously on the beach recording his lines with Rose and back on a set doing the inside scenes.

Revealing: When the Doctor calls Rose when she is with the Daleks, you can see on the screen of her phone that the call has been going on for at least 57 seconds, but she just answered the call.

Continuity: Series 2 - Cybermen vs Daleks When the two Cybermen meet the Dalek for the first time, they are exterminated. They fall directly in front of the Dalek, but when the camera angle changes to show the second Cyberman hitting the floor side on, you can see the Dalek in the background. The Cybermen both fell straight forward, so it shouldn't have been possible to see the Dalek when seeing the Cyberman side on in the next shot, as the Dalek is facing them both directly.