Brusthom Ziamani will serve at least two-thirds of his 22-year sentence before being eligible for parole, sentencing judge Timothy Pontius said.
The 19-year-old was found guilty of preparing an act of terrorism on or around August 20 last year during a trial at the Old Bailey.
A realistic and sensible assessment of the whole of the evidence leads inescapably to the conclusion that this defendant, had he not by sheer good fortune been spotted and stopped by the police on the street in east London, would have carried out the intention he had so graphically expressed to his ex-girlfriend just a few hours before.
More top news
Matt Hancock confirmed he lost his sense of taste while ill with coronavirus but experts say it is not part of the symptoms list.
The Cardinal Archbishop of Westminster spoke to Julie Etchingham about keeping a routine through current lockdown measures.
ITV News understands that military planners are looking at emergency facilities for hundreds of people suffering from Covid-19.