Frances Madigan is described as a white Irish woman, 5ft 6ins, who wears glasses and has auburn hair.
When last seen, she was wearing a blue anorak, black trousers, black leather boots and was carrying a black shoulder bag.
More top news
The body of a 15-year-old boy has been recovered from the River Thames after he was spotting in difficulties in the water.
A woman and a boy have been killed after a car police were pursuing crashed into a family.
A 23-year-old man has died after being injured in an altercation inside a minicab.