Hankin set up Holler in 2005. Before this he worked at Vodafone where he helped to develop Vodafone Live, the company’s digital music platform. He also spent six years at Sony Music as digital marketing manager.
Managing director Keir Mather, who joined integrated comms agency Exposure from BBH in October, said: "Digital and social media are a key part of our integrated offering. Simon has an innate understanding of how people want to interact with brands online and brings a wealth of knowledge and experience to our team."
Hankin said: "Throughout my career, I have a track record of transforming businesses and I’m looking forward amplifying Exposure’s existing digital and social media offering to the next level."