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Director at Policy Exchange
One of the world's highest paid bankers, estimated to be wroth £95m, Diamond took over as CEO of Barclays at the start of 2011. He was previously CEO of Barclays Capital, the group's investment arm.
Brian Coleman became chairman of the London Fire and Emergency Planning Authority in 2008. He is a Conservative member of the London Assembly.
Elite society at Oxford University.
Leader of the Conservative Party. Britain's youngest prime minister for nearly 200 years.