He was publicly executed under the order of King Uther Pendragon when it was discovered that he was a sorcerer. After Thomas's execution, Thomas's mother, Mary, publicly swore that she would get her revenge and declared that she would assassinate Uther's son, Arthur, before teleporting out of Camelot using magic. This assassination attempt, however, eventually led to her own death (The Dragon's Call).
- Series 1
- The Dragon's Call
- It is unknown whether or not Thomas Collins actually practiced witchcraft. Given Uther's general overreaction to any charge of sorcery and his hasty treatment of such cases, it is possible that Collins was wrongly executed. It is however possible that he was in a sorcerer considering the fact that his mother did actually practice magic, and she may have tutored him in the art.
- Thomas Collins' character is the only character whose middle name is identified.
- Thomas Collins is the first character to be killed on the show.
- Rick English was uncredited for his non-speaking role of the portrayal of Thomas Collins.