Continuity mistake: When the Doctor is shown talking to the Daleks on their spaceship, he is standing several metres away. But the people viewing him from Earth see him standing right in front of them. (00:23:33)
Continuity mistake: When Amy reassures the Doctor that he stopped the bomb, he goes from leaning on a nearby pillar with his arm completely straight to his arm bent. And then his hand changes position a couple more times. (00:34:32)
Continuity mistake: When Churchill says "KBO" before the Doctor and Amy leave, the cigar he was smoking and just lit is suddenly missing. (00:37:09)
Revealing mistake: When the TARDIS dematerialises and causes wind to blow against Churchill and Amy, their clothes are affected - but the cigar smoke in the air is unaffected, and actually drifts towards the vanishing TARDIS. (00:14:25)
Chosen answer: No, no information is avalible for the identity of the entity.
Repo_Man
Season 2: The Well.
jakew25