John O'Brian was a pupil at Park Vale Comprehensive School.
John O'Brian lived together with his parents in Ealing. In 2009 he was away on holiday with his parents. They went to Australia for three weeks. They bought a lot of milk from the milkman. The Milkman said, that it had costed him a fortune that the family had cancelled their order.
The house of the O'Brian's has been displaced in time, when they were gone. However Sarah Jane Smith and her team helped to place the house into the correct time again, before the family returned from their holiday. (AUDIO: The Ghost House)