celebrates 50 years of revolutionary equality legislation championed by one woman: Barbara Castle.

As Secretary of State for Employment 1968-70, Castle championed the Equal Pay Act which came into force in 1975, making it illegal to pay women less than men for the same work. Castle's political courage lay essential groundwork for a more equal society.

To underpin her status as a radical and a revolutionary, Firrell portrays Castle wearing the beret of Cuban revolutionary leader, Che Guevara. This engineered portrait of Castle references the wildly popular 1968 poster by Irish artist Jim Fitzpatrick, which was, in turn, based on a 1960 photograph of Che Guevara by Alberto Korda.

Castle, an older woman, appears a long way from the stereotypical image of a radical revolutionary; (older women are often portrayed as benign but ineffectual 'motherly figures') and yet here she is, got up in the guise of one of the most famous radicals of all time.