Former Labour leader Hugh Gaitskell and Tory Prime Minister Harold Macmillan are both cited as "astute politicians".

BBC: Fat lady's friend

Lord Wilson, who was born in Huddersfield in 1916, became Labour leader in 1963 on the death of Hugh Gaitskell, and won the general election the following year.

BBC: Harold Wilson Westminster statue plea

He reveals what disease killed Hugh Gaitskell, the leader of the Labour Party before Harold Wilson, and which tie Sir Geoffrey Howe, the Conservative minister who did most to knock Margaret Thatcher off her perch, was wearing when he resigned.

ECONOMIST: Where the power lies in Britain