Three teenagers who ran away smiling after stabbing a 14-year-old boy in Manor Park will be sentenced next month.

CCTV cameras caught the trio — two aged 16 and one 14 — fleeing the scene “in good spirits”, police said.

The 14-year-old and one of the 16-year-olds were found guilty of grievous bodily harm with intent following a trial at Snaresbrook Crown Court on Friday.

The other 16-year-old pleaded guilty to the same charge at the start of his trial at Snaresbrook on August 22.

The court heard how the trio approached the victim on April 5 as he rode his bike through Little Ilford Park, having played cricket with friends.

One of the 16-year-olds threatened the victim after accusing him of looking at him in a “funny way”.

The victim went to leave the park with his friends shortly before 7pm but was again approached by the trio, the accuser now brandishing a knife.

A struggle ensued where the victim was stabbed in the chest and struck over the head with his own cricket bat.

While his attackers fled along Gainsborough Avenue, he was left with life-threatening injuries including a stab wound just two inches from his heart. He also suffered a collapsed lung and a head injury, requiring a two-week stint in hospital.

Police used CCTV to track all three attackers to their hiding place, where they were charged and appeared in custody at Thames Magistrates’ Court on April 7.

They will be sentenced at the same court on Monday, October 1.