- Mr Byron (Steve Huison) - Mr Byron was the headmaster of Elmsbury in the first series. He was usually hard to please and did not accept Nathan at first due to his behaviour at school but eventually did - making him Teacher of the Year in the series finale. He was referred by Josh, Nathan and his friends while he was at school as 'BOGOF' (when Byron asks Nathan about this name, Nathan pretends it means 'Buy One Get One Free', as 'Byron' sounds like this, however it probably really means 'Bog off'). Ms Poppy mentioned in the second series that Byron had left but that nobody knows why, but she had heard from someone that he went to work with unprivileged kids in South America.
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