G4S plc announced that John Ramsay will join the board as a non-executive director with effect from January 1, 2018. Upon appointment, Mr. Ramsay will also become chairman of the board's Audit Committee (taking over from Paul Spence) and a member of the CSR Committee. John Ramsay served as the Chief Financial Officer of Syngenta AG from 2007 to 2016 and was also Interim Chief Executive Officer from October 2015 to June 2016. John has been a member of the supervisory board at Koninklijke DSM N.V. since May 2017, and a member of the board of RHI Magnesita N.V. since October 2017. The company further announced that Clare Spottiswoode, a non-executive director, who joined the board in June 2010, has informed the company's board of her intention to retire from the board at the conclusion of the company's 2018 Annual General Meeting. The company announced the following changes with effect from January 1, 2018: John Ramsay will become chairman of the Audit Committee, succeeding Paul Spence who will remain a member of the Audit Committee. Winnie Fok will stand down from the Audit Committee, John Ramsay will join the CSR Committee and Steve Mogford will join the Risk Committee.