Havering Police have launched an urgent appeal for help in locating 56-year-old Austin, who has been missing from Rainham since Saturday, 19 April.
Austin was last seen wearing a grey jumper, blue jeans, and a grey cap. Officers say he also has links to the Wembley area and are growing increasingly concerned for his welfare.
The public is encouraged to share the appeal to help locate Austin and bring him home safely.