Lloyd compares its use by protesters to the way Alberto Korda's famous photograph of Argentine revolutionary CheGuevara became a fashionable symbol for young people across the world.
Howard Davies directs this tale of three generations of a dysfunctional family in their seaside, 1930s Art Deco house in Devon, reconstructed by designer Vicki Mortimer, in a way that tells you all you need to know: the mess is incredible though the real estate is obviously valuable, and the CheGuevara poster tags Judy's political views.
He now adds to that list the role of revolutionary Ernesto "Che" Guevara, an Argentine doctor whose role in the Cuban Revolution in the 1950s vaulted him to cult status where he remains today.