Police are appealing for information after a Wimbledon woman went missing in central London on Thursday.
Ann Cockett, 57, has Alzheimer's disease and needs to take medication.
Officers said she travelled into London for a day out with her carer on Thursday.
The pair became separated after arriving at Bank Tube station at about 9am.
Police said Ann is 5ft 7in with short, grey or white hair with a light fringe.
She was wearing a brown coat, blue jeans and a metal bracelet giving details of her Alzheimer's.
Anyone with information should call 0300 123 1212, quoting "CAD 9819 of 15 April".
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