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Douglas Heller

Douglas Heller

Senior Associate

Douglas specialises in complex corporate transactions, primarily in the global energy, infrastructure and mining sectors.



Since joining the firm in March 2010, Douglas has split his time between our London and Tokyo offices. During his time in Japan, he worked on a wide range of complex acquisitions and disposals, joint ventures and infrastructure projects within the energy, infrastructure and mining sectors of Europe, Africa, Asia and North America. 
He has spent approximately three years on secondment to Japanese and North American oil and gas clients, advising as in-house counsel on a variety of large-scale energy projects and transactions, helping him to develop a deep understanding of a client's needs and priorities in this sector.
Douglas's experience includes advising:
  • a Japanese utility company on the potential acquisition of an interest in an integrated LNG project in Indonesia
  • Mitsubishi Corporation on the sale of an equity interest in upstream oil and gas assets in Gabon
  • Mitsubishi Heavy Industries as international counsel on the merger of its thermal power business with that of Hitachi, including conducting due diligence in South Africa and Germany
  • Marubeni Corporation on the refinancing and the sale of its interest in the Millmerran Power Station in Queensland, Australia
  • a global energy commodity trading company on its participation in a new port project in Russia
  • a Japanese energy company on the drafting of an EPC contract for a solar PV project in Japan



Douglas is admitted as a solicitor in England and Wales.  He also holds a master's degree in natural sciences from the University of Cambridge, and is a Japanese speaker.