The AA/Warc Expenditure Report predicts total ad spend in 2016 of GBP20.9bn -- up 4.2% on last year's actual total of GBP20.07bn. This year's growth rate, however, is considerably lower than last year's -- 7.4%. Next year, ad spend is forecast to grow 3.8% to GBP21.7bn. Mobile ad spend, which was just GBP2.63bn in 2015, is expected to hit GBP3.66bn this year and GBP4.52bn next year.