sentences:  He was elected at the 1945 general election as the MP for Nottingham West, and after that constituency's abolition in boundary changes, he was re-elected at the 1950 general election for the new Nottingham North West seat.That constituency was in turn abolished for the 1955 general election, and that is when he was returned to the House of Commons for the re-established Nottingham West seat.O'Brien was General Secretary of the National Association of Theatrical and Kine Employees from 1932 until his death, and a member of the TUC's International Committee.