LONDON, ENGLAND - MAY 18:  Ken Livingstone, former Mayor of London, poses for photographs after getting tested for Hepatitis B and Hepatitis C, to promote getting tested ahead of World Hepatitis Day 2009 (19th May 2009), on the first ever 'Get Tested!' bus at Leicester Square on May 18, 2009 in London, England. Getty Images logo Getty Images 33 months ago

LONDON, ENGLAND - MAY 18: Ken Livingstone, former Mayor of London, poses for photographs after getting tested for Hepatitis B and Hepatitis C, to promote getting tested ahead of World Hepatitis Day 2009 (19th May 2009), on the first ever 'Get Tested!' bus at Leicester Square on May 18, 2009 in London, England.