Sir David Walker is to join the board of Winton Capital as a non-executive chairman, freeing up founder David Harding to focus on expanding the $28 billion UK hedge fund manager into areas including fixed income.

Walker was formerly with HM Treasury, the Bank of England and the International Monetary Fund, and is currently chairman of Barclays. He will step down from the UK bank on April 24, and join the board of Winton on July 1, according to a statement.