The Old Bailey has been told that a woman who attacked two strangers with a knife, had killed her mother six years before.
Nicola Edgington is now on trial accused of murdering one woman, and attempting to murder another in Bexleyheath on 20-11.
Paul Brand reports.
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Families living near Heathrow say they are supporting a group of activists facing jail for chaining themselves to the airport's runway.
Police were called to break up a "large fight" which involved a baseball bat, a man dislocating his shoulder and three arrests.