Corrected entry: 2005 Christmas special, the Christmas invasion: A few times it is possible to see the Major's epaulettes. The symbol is a crown as in the British army. But seeing as Unit is a United Nations organisation (it stands for United Nations Intelligence Taskforce), an officer would have no reason to have a crown symbol on his epaulettes.
Corrected entry: Season 2: Episode 10 - Love and Monsters: Elton said that when he was young, he went downstairs and found the Doctor there. However, the Doctor has only looked like he does now for maybe a year or less because he keeps regenerating and changing his looks, so when Elton saw him he should have looked completely different.