LONDON, ENGLAND - JULY 07: London Mayor Boris Johnson (L) British Prime Minister David Cameron place wreathes at the July 7 memorial in Hyde Park on July 7, 2015 in London, England. Today is the tenth anniversary of the 7/7 bombings, when four suicide bombers struck transport system in central London on Thursday 7, July 2005, killing 52 people and injuring more than 770 in simultaneous attacks. (Photo by Steve Parsons- WPA Pool/Getty Images)
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UK honors victims of 7/7 bombings on 10th anniversary
London pauses to remember the lives lost in the 7/7 terrorist attack that happened 10 years ago. CNN's Erin McLaughlin reports.
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LONDON, ENGLAND - JULY 07: London Mayor Boris Johnson (L) British Prime Minister David Cameron place wreathes at the July 7 memorial in Hyde Park on July 7, 2015 in London, England. Today is the tenth anniversary of the 7/7 bombings, when four suicide bombers struck transport system in central London on Thursday 7, July 2005, killing 52 people and injuring more than 770 in simultaneous attacks. (Photo by Steve Parsons- WPA Pool/Getty Images)
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UK honors victims of 7/7 bombings on 10th anniversary
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A police car is seen parked outside Leytonstone station in north London on December 6, 2015. Police were called to reports of people being attacked at Leytonstone around 19:00 GMT on December 5. The police have said that they are considering a knife attack the previous evening as a " terrorist incident" after reports that the man reportedly shouted "this is for Syria". The man was arrested after being Tasered by police. One man suffered serious knife injuries while two others received minor injuries. / AFP / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
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