Teenage boy who threw cheese at schoolmate who subsequently died tells inquest "I didn't know it would kill him."

Karanbir Singh Cheema, known as Karan, suffered a serious allergic reaction to the cheese slice at his school in Greenford, West London, just before midday on June 28, 2017.

The 13-year-old was severely allergic to wheat, gluten, all dairy products, eggs and nuts and he was also asthmatic and suffered from atopic eczema.

Giving evidence behind a screen during the inquest into Karan’s death on Wednesday, one of two boys then aged 13 and now aged 15, who cannot be named, said he knew Karan was allergic to bread but was unaware of his dairy allergy.

Speaking at Poplar Coroners' Court, where the inquest took place, he said: "I thought maybe he would get a fever or a rash and miss school for a while... I didn't know it could lead to death."

He said he "flicked" the cheese at Karan from about a foot away and that he “didn’t know he was allergic.”

He added: "I think it landed on the left side of his neck.

When asked why he had flicked the cheese he responded that it was “usual behaviour in year eight”.