A police officer was injured when he was confronted by a knifeman in Hanwell on Wednesday.
However, reports that the officer was stabbed proved false after it emerged his injuries were caused by a fall.
Police were called to Cotts Close shortly before 5.30pm when they were confronted by a man in his 40s, armed with a knife.
First reports from police suggested the officer had been attacked by the knifeman, but yesterday (Thursday) morning a police spokeswoman confirmed that the officer had not been assaulted.
A statement said: “In an attempt to prevent further escalation of violence, an officer has fallen and received an injury to his leg.”
London Ambulance Service told the Gazette it attended the scene after being told a man in his 30s had been stabbed. He was taken to a west London hospital as a priority, and has since been discharged.
Police have arrested a man at Cotts Close on suspicion of GBH. He is in custody at a west London Police Station while enquiries continue.
Scotland Yard would not say why the police were originally called or give any further detail when getwestlondon contacted them on Thursday.