The NHS's North West London trust has recommended four A&E departments be closed.
The units in Ealing, Central Middlesex, Charing Cross and Hammersmith could be downgraded to 24/7 urgent care centres.
The new proposed plans would see other major hospitals take A&E patients, peforming both emergency and elective operations, as well as running tensive care units, psychiatric liaison, inpatient paediatrics and a maternity unit.
The hospitals tasked with taking on the extra burden are Chelsea and Westminster, Hillingdon, Northwick Park, St Mary's and West Middlesex.
More top news
Sue Gallagher was shocked to read the letter written by a woman who signed her name only as Jodi. The contact details were washed off.
Mike Gapes revealed the bitter splits and turmoil after publicly declaring the party had 'no credible leadership.'
London's mayor took hold of professional dancer Charlotte Gooch and led her in a waltz in Hankyu, Osaka.