WPP founder and chief executive Sir Martin Sorrell has joined the board of directors of aluminium producer Alcoa.

Sorrell, who heads up WPP, which owns such commuications and marketing businesses as JWT, Ogilvy, Young & Rubicam, Group M and Grey, has been named as a director of the company.

Klaus Kleinfeld, chairman and CEO of Alcoa, commented: “Sir Martin has an enormous reputation all around the world as a remarkable leader and extraordinary individual. Alcoa is fortunate to have the benefit of his sound judgment and outstanding global perspective.”