Leonard David McCluskeyis a British trade unionist. He was General Secretary of Unite the Union, the largest affiliate and a major donor to the Labour Party.
As a young adult, he spent some years working in the Liverpool Docks for the Mersey Docks and Harbour Company prior to becoming a full-time union official for the Transport and General Workers' Union (T&GWU) in 1979.
McCluskey was elected as the general secretary of Unite in 2010, and was re-elected to his post in 2013 and 2017. A member of the Labour Party, McCluskey is on the party's left. He was a key backer and supporter of Jeremy Corbyn during his time as Leader of the Labour Party.
