Havas, a global communications agency, completed the acquisition of Wilderness   , a social media transformation agency. Financial terms were not disclosed. "We have a long-term vision to become the leading social media agency for clients looking to transform how they approach social within their organisation. The scale and opportunity being part of Havas affords us will allow us to realise that mission. I can't wait for us to get started," Tom Jarvis, Wilderness Managing Director.