Guaranteed a Saturday night slot by ITV, he continued to attract guests of the calibre of Tony Blair, who was prime minister at the time, wildlife presenter Sir David Attenborough and singer George Michael.

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Even the changing lineup of nightly guests, which can attract or put off casual viewers, doesn't significantly impact regular viewership patterns.

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He's a big asset for the British government, able to attract A-list political, corporate and showbiz guests to receptions at tour stops in Washington, Denver and New York.

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