Elmi Awil, a Brunel University student and talented basketball player, has been cleared of murder and manslaughter following a case made by his legal team that he acted in self-defence.
Mr Awil, 21, was charged with killing Mustafa Farah, 24, following an argument between two groups on 4 June 2016 on Willesden High Road, north-west London. Awil hit Farah with the handle from a shopping trolley after being threatened by Farah in the confrontation.
Pathologist Ashley Fegan-Earl found he had suffered a heart attack as a result of being struck in the vagus nerve in the neck, something he had only seen three times in 17,000 post-mortem examinations.
Farah died in hospital eight days after being injured. Awil initially left the country after the confrontation and went to Amsterdam but later handed himself in to police.