LONDON - MAY 01: (L - R) Sheikh Ahmed bin Saeed Al Maktoum - President of the Department of Civil Aviation Dubai, Dr Sultan Ahmed Al Jaber - Minster of State and Masdar City CEO, The Duke of York, ... more 
LONDON - MAY 01: (L - R) Sheikh Ahmed bin Saeed Al Maktoum - President of the Department of Civil Aviation Dubai, Dr Sultan Ahmed Al Jaber - Minster of State and Masdar City CEO, The Duke of York, Sheikh Hamed bin Zayed Al Nahyan - Chairman of the Abu Dhabi Crown Prince's Court, Greg Barker, UK Energy and Climate Change Minister, UK Green Investment Bank plc CEO Shaun Kingsbury and Khaldoon Khalifa Al Mubarak - Chairman of the Abu Dhabi Executive Affairs Authority, pose fir a group photo at Buckingham Palace, on May 01, 2013 London, England. The signing of a Memorandum of Understanding to explore project investment opportunities in the UK's clean energy sector comes as the President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan, is making a state visit to the UK. His Highness is due to meet with Prime Minister David Cameron today as three Britons, who were found guilty of drug possession, remain in prison alleging that they have been subjected to torture by police in Dubai. (Photo by Lewis Whyld - WPA Pool/Getty Images) less 
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Wed, May 1, 2013 9:41 AM EDT