He is also heard saying he wants to push someone from a tall London landmark.
“It could be the Shard, it could be anything just as long as it’s a high thing and we can go up and visit it and then push somebody off it and I know for a fact they’ll die from falling from a hundred feet,” Bravery is alleged to have said.
At the time of the attack, Bravery, who has autism, was in the care of Hammersmith and Fulham Council and lived in West London with round-the-clock care.
The unearthed recording followed Bravery admitting the charge of attempted murder at the Old Bailey in December last year.
The six-year-old, a French tourist – who cannot be identified – suffered life-changing injuries. In January, his parents explained he was still unable to stand but could now open his left hand.
Good Morning Britain airs weekdays at 6am on ITV.