Twelve of the set are historic bells from St Martin-in-the-Fields church in Trafalgar Square in London; six others, cast in recent times by the Whitechapel Bell Foundry, round off the set. The St Martin-in-the-Fields bells were donated to the State of Western Australia as part of the 1988 Australian bicentenary celebrations; the additional bells were cast with a subsequent donation of metals mined in Western Australia. The six newer bells include five that were presented to the University of Western Australia, the City of Perth and to the people of Western Australia by the City of London, the City of Westminster and a consortium of British and Australian mining companies, and one bell commissioned by the Western Australian Government.