​CCTV footage charting an ISIS-inspired teenager's alleged plot to blow up commuters on the Tube was shown in court.

Damon Smith was 19 when he allegedly packed a rucksack with explosives and deadly ball-bearing shrapnel and left it on a train on his journey to University.

Had the device worked, it would have exploded just as people were being evacuated from the Jubilee Line platform at North Greenwich, jurors were told.

Footage played in court shows Smith getting off the train at London Bridge, leaving behind his rucksack that a court heard was set to explode just minutes later.

There were at least 10 passengers in the carriage at the time, some of whom spotted the unattended bag and reported it when they arrived at Canary Wharf.

The court heard how Smith, now 20 years old, had a keen interest in Islam, guns, explosives and gambling.

He collected pictures of extremists, including the alleged mastermind of the 2015 Paris terror attacks, a jury was told.

After he was arrested, the autistic student, who moved to London from Devon in June last year, admitted making the device but claimed he only meant it to spew harmless smoke as a prank.

An only child, Smith was diagnosed with Asperger's syndrome, an autistic condition which can affect the way he interacts with people and result in a lack of empathy.

Before the Tube incident, Smith is said to have printed off an al Qaida article entitled ‘Make A Bomb In The Kitchen Of Your Mom’.

He made notes in green ink before shredding the sheets of paper, jurors were told.

It is alleged the London Metropolitan University student searched the web for an Islamic State magazine featuring an article about the bomb said to have brought down a Russian airliner in 2015.

A shopping list for "pressure cooker bomb materials" was also allegedly found on an iPad ending in a note to "keep this a secret between me and Allah £InspireTheBelievers".

It contained nearly all the components used in the construction of the device found on the London Underground, including a £2 clock from Tesco and ball bearings described as "shrapnel".

Smith boarded a train from Surrey Quays to Canada Water before getting on the westbound Jubilee Line, then going back on himself at Southwark.

At 10.49am, the defendant got off at London Bridge leaving behind his rucksack containing the bomb set to explode minutes later at 11.02am.

Smith, wearing a brown hoodie and jeans, was seen in the footage leafing through a text book as unsuspecting commuters sat nearby reading newspapers.

The driver took the bag thinking it was lost property and carried on towards North Greenwich, prosecutor Jonathan Rees QC said.

It was while he was en route to the next stop that the driver noticed wire poking out of a clock.

Meanwhile, Smith went to his Holloway university campus and searched for articles for the incident when he got home later.

Jurors were told of Smith's interest in poker, YouTube, Islam as well as guns, explosives and other weapons.

On his faith, Smith allegedly told police he was brought up Christian, but Islam was "more true". He denied being an extremist.

A search of Smith's home in Rotherhithe, south London, uncovered a blank-firing self-loading pistol, a BB gun, both bought legally.

A knuckleduster and a knife which he showed off in an online video was also found.

Pictures were also recovered of Smith with guns, including one on a laptop labelled "2016 an Islamic State fighter".

Smith watched YouTube videos on explosions and allegedly posted a picture of himself on Facebook in a Guy Fawkes mask holding handcuffs and a knuckleduster, jurors were told.

He also posed next to an image of the Brussels-born Islamic terrorist alleged to have masterminded the attacks in Paris in November 2015, the court heard.

Smith denies possession of an explosive substance with intent, contrary to the Explosive Substances Act 1883 but has admitted the lesser offence of perpetrating a bomb hoax.

The trial was adjourned until Thursday.