John Tennent is co-author of The Economist Guide to Business Modelling. He is an accountant, who for the past 20 years has been involved in training and consultancy with firms such as Unilever, BOC, BAE, Kraft, Thomson Corp, Cable & Wireless, BT, St Gobain and EMI. Graham is the Managing Director of Coleago Consulting Ltd, a boutique consulting firm specialising in the telecommunications, media and technology sectors. Graham leads complex strategic and financial, multi-billon dollar projects around the world for clients involved in the telecommunications sector. Graham is experienced in advising on issues of strategy and value creation at board level, across a broad spectrum of communication businesses. He is a creative and innovative facilitator and business coach and co-author of The Economist Guide to Business Modelling and The Economist Guide to Business Planning. He is an expert in telecommunications strategic and business planning, business modelling and financial forecasting and valuation. Before forming Coleago Consulting in 2001 with Stefan Zehle, Graham worked for Cable & Wireless where he provided internal consulting support across the C&W portfolio of mobile businesses including projects in China, Hong Kong, Macau and Australia. Prior to C&W, Graham worked as a management consultant at Price Waterhouse Coopers in the Financial Management and Business Appraisal Practice. Graham holds both an M.A. and an M.Phil in Economics from Trinity College, Cambridge and is also a Chartered Accountant. When not consulting Graham pursues his passion for skiing through the Extreme Ski School he established in Verbier, Switzerland.
