Corrected entry: It is claimed in "Timelash" that the young H.G. Wells was a teacher. In 1885 (when he is supposed to have encountered the Doctor and Vena), he was apprenticed to a draper in London. He didn't become a teacher until after he had gained a BSc in zoology and geology at university in 1888, three years AFTER the period in which this story is set.
Corrected entry: The TARDIS comes under "enormous g-force", implying it is free falling through an atmosphere. However the Doctor later says something about it not begin able to breathe in a vacuum, with would imply they were still in space. (However, planets aren't the only things to produce gravity, suns also do, but suns tend to be fairly hot, and nothing is said about heat...).
Corrected entry: The effect of the brain scanner is flat to the screen, which is fine when looking straight at the Doctor. However we then see it from an angle, and the effect is still flat to the screen. These means it moves from scanning straight across his neck, to going from right shoulder to left ear.