John Andrews was a member of the crew of the SS Bernice.
On 4 June1926, the ship was removed from space and time and placed in a miniscope which eventually came into the possession of a Lurman named Vorg.
Vorg used the miniscope to increase John's aggressiveness, causing him to challenge the Third Doctor. They had a boxing match and John was beaten. He was in a relationship with Claire Daly. The miniscope time loop resulted in the pair constantly walking round the ship before a Drashig emerged, causing Claire to scream and John to run for help.
John Andrews, along with the rest of the passengers and crew of the Bernice, was returned to Earth by the Doctor. (TV: Carnival of Monsters)