Two-thirds of convicted terrorists released from jail in the last fifteen years refused to engage with prison de-radicalisation programmes that address extremist behaviour. They have served their sentences and are back on Britain's streets, many still holding the same extremist beliefs that got them jailed in the first place. MI5's director general said that police and intelligence services have foiled twelve terror plots since June 2013. The release of 418 terror prisoners, many from the al-Qaeda generation of offenders, is posing a huge challenge for police and the security services, already stretched to the limit with the threat from IS-related terrorism. Lord David Blunkett said that if it isn't possible to reassess them, we should monitor them outside prison. If they reconnect with organised terrorist groups, intervention must take place very quickly rather than allowing them to commit another act.