Both of Nigerian descent and both known to the security services. Prime Minister SlimeBall Cameron says we shouldn't be scared to walk the streets. I see his point of course, but no doubt he has no worries walking down the street, with all his body guards.
Here's an article about the security forces knowledge and also about a brave woman who talked to the attackers and tried to get their weapon from them.
http://www.bbc.co.uk/news/uk-22634468
