Immedia Group plc announced that Geoff Howard-Spink has stepped down as Non-Executive Chairman of the company. In addition following a company Board meeting, the company has appointed Tim Hipperson as its new Non-executive Chairman. He has a proven track record of helping companies develop and deliver innovative business plans, mergers, acquisitions, business change programmes and significant growth having held CEO positions within WPP, Interpublic Group and Publicis Groupe and more recently as Interim CEO at Weve Limited, the jointly funded mobile venture invested in by O2, EE and Vodafone.