Thousands of demonstrators today marched in protest against plans to scrap Lewisham hospital's A&E department and downgrade its maternity ward.
More top news
The Royal London Hospital and Newham University Hospital have been declared inadequate by the Care Quality Commission.
Homes have been evacuated as the Army works to defuse an unexploded World War II bomb discovered near Wembley Stadium.
The strike threat came just minutes after a national rail strike planned for Monday was called off.