Mr Bush, 57, has been in power since his United Democratic Party (UDP) won general elections in 2009.

BBC: Cayman Islands' leader McKeeva Bush

And as for all those who will no doubt continue to try to push me into leading a campaign for a U.K. exit, I only have this to say: if I couldn't even win a general election in the depths of a recession with my party united behind me, what makes you think I could win a referendum?

WSJ: What Cameron Needs to Say on Europe

Meanwhile, United Kingdom Unionist Party leader Robert McCartney predicted catastrophe for the Ulster Unionists at the forthcoming General and local government elections.

BBC: SDLP ups arms pressure

Since then, annual lectures at the centre have been given by world figures including former president of South Africa Nelson Mandela, former United Nations secretary-general Kofi Annan and Sonia Gandhi, leader of India's Congress Party.

BBC: Prince Charles gives speech on Islam in Oxford