Young Socialists from Glasgow, Liverpool and Swansea march to London and discuss their economic struggles en route. Supporting them are Ken Loach, Corin Redgrave, Arnold Wesker and other leading cultural figures of the left of British politics. The march is intercut with scenes dramatising parallel injustices in the English Civil War era and earlier - featuring Frances de la Tour in queenly mode as Elizabeth I. The film's unconventional structure also features frequent extracts of the rousing pop concert, with the band Slade, which culminated the epic march.