Aviva chairman John McFarlane is to replace Sir David Walker as chairman of Barclays.
McFarlane will take up the role next April.
Aviva has announced that Sir Adrian Montague, who already sits on the insurer’s board, will become non-executive chairman when McFarlane joins Barclays.
Aviva says it was made aware “some time ago that McFarlane might need to leave earlier than he had anticipated to return to banking”.
The insurer has thanked McFarlane “for the enormous commitment and contribution made by him since joining the board three years ago”.