Beach (pictured) joined Ebiquity in 2007 and was made CFO a year later. In 2014 he also took on responsibility for operations and IT.

Michael Higgins, Ebiquity’s chairman, said: "On behalf of the board I would like to thank Andrew for his contribution to Ebiquity over the past nine years. Andrew has been a key member of the executive team that has led the transformation of the business during this time. His unstinting diligence and professionalism are the hallmark of a high quality CFO and we wish him every success for the future."

Also, Ebiquity and FirmDecisions, in partnership with The Association of National Advertisers (ANA), have released recommendations aimed at helping global marketers and advertisers improve internal governance and gain greater control over their advertising budgets.

The guidelines are part of the Media Transparency: Prescriptions, Principles, and Processes for Marketers report which followed the June release of an ANA-commissioned assessment by K2 Intelligence which found non-transparent business practices, including cash rebates to media agencies, were pervasive in a sample of US media ad-buying.

ANA has released a contract template for marketers which was first created by the Incorporated Society of British Advertisers (ISBA) and adapted for the US.