M2M picked up the digital media planning and buying account in 2014, when it was reported to be worth £8m. Initiative handles media for the above-the-line business.
The review is being run by AAR, which has started contacting agencies.
Fold7 picked up Audible’s creative account last year, seeing off compe-tition from BMB and Red Brick Road in a process that also involved 18 Feet & Rising. That review was also handled by AAR.
Audible had previously worked with a number of agencies including digital shop Firstborn.
Fold7’s brief was to raise awareness of the Audible brand. The agency created noir-style ads featuring a pair of headphones that blend to form a robot’s head, with a voiceover from actor Steven Berkoff.