Edward Cunningham was last seen in the Cricklewood area on Friday, January 13 at around 12.45pm.
Edward has dementia, Alzheimer's, low blood pressure and diabetes, and police are growing increasingly concerned for his welfare.
The 77-year-old is described as a white man, is 5ft 5ins tall and is of medium build with white shoulder length hair.
Anyone with information relating to his whereabouts should call police on 101.
Alternatively, you can contact Missing People on 116000.
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