Police are appealing for help from Londoners to find a man from Gloucester.
Martin Beattie was last seen on January 25 at around 12.30pm.
Officers believe he may have travelled from Gloucester City Centre to the Walthamstow area.
Mr Beattie grew up in the borough and knows the Lea Bridge Road area well, where he still has relatives.
Also known as Jonathon, Martin Beattie is white, around 5ft 11ins , of average build, usually smartly dressed, well spoken and has dark brown hair.
He is usually clean shaven and has a pale complexion.
He may currently be wearing a high-visibility jacket.
Police are concerned for his welfare and would urge Martin or anyone who has seen him to contact Gloucestershire Police on 101, quoting incident number 297 of 28 January 2015.
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