15 March – The town of Winchelsea in East Sussex is attacked and burned by an expeditionary force from France.[2]
April – Hundred Years' War: English forces leave the vicinity of Paris after laying waste to the countryside.[1]
8 May – Hundred Years' War: the Treaty of Brétigny is signed, marking the end of the first phase of the War. Under its terms, Edward III gives up his claim to the French throne and releases King John II of France in return for French land, including Calais and Gascony.[3]
June – under the terms of the will of Sir John de Wingfield (d. 1361), the church of St Andrew and a college of priests are founded in Wingfield, Suffolk.
22 June – alliance between England and Castile.[1]
30 November – Hundred Years' War: Charles V of France recaptures most of Aquitaine from the English.[1]
December – Financed by Charles V of France, Owain Lawgoch launches a Welsh invasion fleet against the English in an attempt to claim the throne of Wales, but a storm causes him to abandon the invasion.
14-year truce between England and Scotland signed.[1]