A decision will be made today on whether four A&E units will close.
Despite huge opposition, the departments in Ealing, Central Middlesex, Charing Cross and Hammersmith hospitals could be downgraded to urgent care centres.
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The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.
The family of the police officer who was murdered in the Westminster attack have thanked those who were with him 'in his last moments'.