But MediaCom's eight losses, totalling £57.8m, meant the agency's net billings came in at £66.7m at the end of the year. This included the £23.7m Procter & Gamble press-buying account (now with Publicis Groupe's Starcom) and the £12.9m Carpetright business (now with Publicis' Zenith).
In second place was Omnicom's PHD, which secured three wins totalling £64.6m in new billings: Funding Circle, BetVictor and Argos.
Not far behind was Starcom, which picked up third place thanks to winning the P&G press-buying account, as well as Heinz and Pandora Jewellery.
Each week, Campaign publishes the agency new-business leagues across the creative and media sectors.
The tables rank agencies according to how much business they bring in as well as any accounts they lose.