There was no slowing Carat down last year, they followed up a very successful year with a huge 2013. Ad Age chose Carat as the Media Agency of the Year because of their ability to kick on, they increased revenue by 20% and recruited top talent 2013, while still securing new accounts and managing their huge General Motors account.

Carat Global President Doug Ray said: "After winning so much business last year we could have gotten distracted by trying to absorb the business and being too internally focused, the goal was to avoid distraction by hiring and "scaling operations."

Pharmaceutical conglomerate GSK has split their billion-dollar media planning and buying accounts between fierce rivals WPP and Omnicom, ousting agencies from Publicis and Aegis.

GroupM agency MediaCom has announced the retention of its second-largest UK account after winning a three-way pitch for media planning and buying.

Ahead of Wednesday's awards announcement at the international advertising festival, British agencies OMD and Maxus are leading the pack with two nominations each, according to Campaign Magazine.

Following the completion of their historical £3.2bn merger with Dentsu last week, Aegis have announced a major client win in the form of luxury fashion label Burberry.

Japanese media giant Denstu have at last completed their £3.2bn takeover of Aegis and have announced the formation of Denstu Aegis Network in London.

One of the UK's leading advertising agencies has predicted a rise in global ad spend in 2013, building upon an improved 2012 and revising previously lower expectations.

Using data "supplied exclusively to Campaign" via Nielsen, Maisie McCabe's report revealed an overall decline in billings for the top 100 creative agencies and top 50 media agencies during 2012.

Micro-blogging social network Twitter has released their list of the best marketing campaigns used on its platform over the last year, with mobile rebrand Everything Everywhere taking top spot as the most successful example of Twitter advertising.

The cosmetics giant has hired IPG's Universal McCann and GroupM's MEC for its media planning and buying business, removing the incumbent Carat from the reported £200m account.