A man in his 40s was found dead in a wooded area on Hatton Road on Tuesday (March 8), police said.
Hounslow CID believe they know the identity of the male reported to be in his 40s but formal identification has yet to take place.
Officers are continuing with enquiries but are not seeking any other person in connection with the death at this time.
A statement from the Metropolitan Police said: "Police were called at 1pm on Tuesday (March 8) to reports of a man in his 40s found deceased in the wooded area of Hatton Road, Bedfont.
“At this early stage the death is being treated as unexplained.”
Next of kin have not been informed.
A post-mortem will be held in due course.