A street cleaner, who was stabbed while trying to stop a burglar making a getaway, has died from his injuries.
The man - aged 40 - was airlifted to hospital yesterday after the incident in Shepherds Bush. Police have arrested six people.
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A post-mortem report found no traces of drugs or alcohol, and the evidence suggests Simon Brown was not taking photos.
The masked men used an angle grinder to tear through the lock.
Doing as little as possible in the first minute helps people regain control of breathing and increases chances of survival, says the RNLI.