Ian, whose surname has not been disclosed, was last seen today (Thursday, September 11) at around 6.30am in Winfield Drive in Witney.
Thames Valley Police has since launched a manhunt for the 53-year-old, appealing for anybody who knows his whereabouts to get in touch as soon as possible.
The man was last seen in a Royal Mail jacket(Image: TVP)
A spokesperson for the police’s West Oxfordshire team said: “Ian, aged 53, was last seen at 6.33am on Thursday, September 11 in Winfield Drive, Witney.
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“He is known to frequent the Witney area, specifically Deer Park and Ducklington. He also has links to Didcot, and Devon and Cornwall.
“Ian was last seen wearing a bright coloured Royal Mail jacket, and carrying a white carrier bag.
“If you see him, please call 999, quoting the reference 43250465047.”