Martin Sorrell's WPP reports worst year for growth since 2009

World’s largest advertising and marketing services group records 0.9% fall in revenues to £15.2bnThe world’s largest advertising and marketing services group, WPP, has said last year was its worst since the 2009 recession, as it published gender pay gap figures.The UK company reported a 0.9% fall in revenues to £15.2bn in its results for 2017, making it WPP’s worst year in growth terms since 2009 when the company reported a fall of 8.1% during the depths of the rece