Patryk Kwiatkowski, 33, was reported missing by the borough's force on Sunday afternoon (November 12).
Posting to Twitter at 2.46pm, police asked for help from members of the public.
They said: "Patryk KWIATKOWSKI age 33yrs #missing from #Hounslow area, please help us to find Patryk."
Anyone with information relating to his whereabouts is asked to call police on 101, quoting reference 17MIS049321.
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