MARK WILLIAMSON, CA (SA)

Chairman of the Board

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SKILLS AND EXPERIENCE

Mark is a qualified accountant, who brings considerable financial and general managerial experience to our Board. Mark was Chief Financial Officer of International Power plc until 2012 and is experienced in managing relationships with the investor and financial communities. Prior to joining International Power plc, Mark was Group Financial Controller and Group Chief Accountant of Simon Group. He is also a former Senior Independent Non-Executive Director and Chairman of the Audit Committee of Alent plc.

APPOINTMENT

Mark joined the Board in July 2007 and was appointed Senior Independent Non-Executive Director in February 2012. He was subsequently appointed Deputy Chairman of the Board in January 2013 before being made Chairman in February 2014.

COMMITTEE MEMBERSHIP

Chairman of the Succession and Nominations Committee.

EXTERNAL APPOINTMENTS

Chairman of Spectris plc; Senior Independent Non-Executive Director and Chairman of the Audit Committee of National Grid plc.