RECMA has revealed its UK media agency billings computations for 2013 and WPP/GroupM’s Mediacom was the biggest with billings of £2.65bn followed by Dentsu’s Carat with £1.96bn and another GroupM agency Mindshare with £1.84bn. in all the big networks accounted for £16.3bn with the biggest independent – The 7Stars – on just £162m. These billings ...