7/7 London bombings: PM lays wreath in memory of victims

Events are taking place in London to mark the 10th anniversary of the 7 July terrorist attacks that killed 52 people in the capital.

The attack - by four suicide bombers linked to al-Qaeda and carrying rucksacks packed with explosives - was the worst single terrorist atrocity on British soil.

Prime Minister David Cameron and London Mayor Boris Johnson were among those who laid wreaths in Hyde Park, central London, in memory of those who died.

Commentary by Bill Turnbull.