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LONDON - JULY 7:  Paul Dadge (R), 28, helps Davinia Turrell, 24, to safety at Edgware Road station following a series of explosions which ripped through London's underground tube network on July 7, 2005 in London, England. Blasts have been reported on the underground network and buses across the capital.  (Photo by Gareth Cattermole/Getty Images)
LONDON - JULY 7:  Paul Dadge (R), 28, helps Davinia Turrell, 24, to safety at Edgware Road station following a series of explosions which ripped through London's underground tube network on July 7, 2005 in London, England. Blasts have been reported on the underground network and buses across the capital.  (Photo by Gareth Cattermole/Getty Images)

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CNN's Max Foster goes through some of the most recent terror attacks in the UK.

A recent history of UK terror attacks

CNN's Max Foster goes through some of the most recent terror attacks in the UK.