7/7 London bombing attacks: 'Hundreds may be living with trauma'

Hundreds of people who witnessed the 7/7 attacks on London's transport system may have fallen under the radar to get professional help, experts say.

BBC London's Gareth Furby spoke to Chris Brewin, professor or psychology at the University of London, eye witness Ben Thwaites and Dr Andrew Hartle, a doctor who treated some of the casualties.

He also spent some time with Sabrina Cohen-Hatton from London Fire Brigade to see how the emergency services would cope with another large scale incident 10 years on.