A two-year-old boy and two adults were taken to hospital with chemical burns they suffered in an apparent acid attack in a street. The adults – a man and woman – suffered 15 per cent burns to their hands and torsos while the child suffered slight burns to his face after coming into contact with an “unknown liquid”.

The substance had a PH reading of 1 – or “ultra acidic” – and tests confirmed a “strong acidic and oxidising substanceā€. The man’s injuries were not being treated as life-threatening, but they were serious enough that detectives were waiting for an update from medics to find out if they were life-changing, said police.

Metropolitan Police said the trio – a man, woman and the child – suffered injuries which were “consistent with a noxious substance being thrown”. They were attacked in the Copenhagen Street junction with Caledonian Road in Islington, north London, on Saturday at about 1pm. Police, London Ambulance Service and London Fire Brigade were called to the scene.