VIDEO: 7/7 Anniversary - David Cameron pays tribute to victims
David Cameron and Boris Johnson laid wreaths at the permanent memorial to the 52 victims killed in the atrocity in Hyde Park, central London. The Prime Minister and Mayor of London paid their respects at 8.50am. At that time a decade ago, a series of explosions hit the capital's transport network. Survivors and relatives of victims are attending other services at stations in the capital.