The terrorist behind today's attacks in London has been unofficially named as Abu Izzadeen, a convicted hate preacher from Hackney.
Izzadeen was jailed for 4 and a half years in 2008 for raising funds for a banned terrorist organisation. He was given a 2 year prison sentence last year (which would have been reduced to 12 months for "good behaviour") for breaching travel restrictions after being arrested on a train heading from Turkey to Romania. If the terrorist was Izzadeen it is likely that the attack was planned during his time in prison.