Countdown to a vile act

October 2017: Jonty Bravery, 16, diagnosed with autism at the age of five, is placed in the care of specialist staff after an assault on a female worker.

April 2019: Bravery, now 17, is arrested after punching a care worker on a trip to Burger King in Brighton.

May 2019: The teenager conducts a series of searches on his iPad. These include news articles with the headlines “CCTV footage shows tube push murder attempt” and “March attack at station”.

August 3 2019: Bravery conducts a number of searches online. These include asking if he can go to prison for attempted murder if he has autism, “guaranteed” ways to go to jail, and “Which event is more likely to cause death – pushing a girl into the River Thames or shooting a girl in the stomach?”

August 4 2019: The day of the attack at Tate Modern.

12.16pm: Bravery, living in supported accommodation in Ealing, west London, leaves his home to buy an Oyster card at a shop on Church Road, Northolt.

1.10pm: Bravery arrives at London Bridge Station, on the Southbank, and makes his way to the Shard.

Once there, he asks a member of staff how much it costs to enter but does not have enough money. CCTV footage then shows him walking away before turning back to ask for directions elsewhere.

2.16pm: Bravery arrives at Tate Modern on foot, speaks to a member of staff, is seen pointing upwards, and takes the lift to the 10th floor viewing balcony.

2.32pm: The victim and his parents arrive on the viewing tower where Bravery has been waiting. The boy skips ahead of his parents briefly, allowing Bravery to scoop him up and throw him over the edge.

Bravery then moves away and can be seen smiling, with his arms raised. The victim’s parents panic – the father challenges Bravery while the mother attempts to climb over the barriers to her son, 100ft (30m) below, before being stopped by witnesses.

Members of the public detain Bravery, remarking he seems “calm” and “lacking emotion”.

August 6 2019: The Metropolitan Police charge Bravery with attempted murder. He is remanded into custody.

June 25 2020: A two-day sentencing hearing begins at the Old Bailey. Bravery appears via video link from Broadmoor Hospital, where he can be seen moving between his chair and a crouched position on the floor.