The 50-year-old was last seen at about 3pm on Sunday, April 3.
It is understood that he may have travelled to Brighton or to London.
He is a slim white man, 5’3”, and known to often wear a bright-coloured trilby or bowler style hat.
Anyone who sees him or knows his whereabouts is asked to call Sussex Police on 999 and quote serial 1154 of 03/04.
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