About 14 months ago the the former CEO of GroupM agency Mediacom in the USA got up on a stage in front of an audience of marketers at an ANA event in Hollywood, Florida, and turned the world of media agencies on its head.

His accusations about agencies demanding rebates from media owners – known in this market as value banks – started a chain of events that would finish in ex-FBI investigators being called in to investigate the extent of the issue.

Despite accusations from former colleagues he has effectively destroyed trust in the advertising world, it is clear Mandel is unrepentant about letting the cat out of the bag.

Read the full Mumbrella article here.