Detectives have issued an e-fit image of a man who was found dead in the undercarriage of a plane last year.
Sussex Police were called following the discovery of a man's body on board an aircraft at Gatwick Airport on December 7.
The flight had taken off from Banjul in Gambia shortly before 10pm local time and landed in London at about 4am.
Officers are investigating the case in the hope to formally identify the man - and are working in partnership with the High Commissioner for Gambia, Interpol, and HM Coroner.
Detective Inspector Darren Lillywhite said: "This was a tragic case, and we are working to establish the identity of the man found deceased.
"We have now produced an e-fit image of the young man, believed to be aged in his 20s or 30s, which we have shared with authorities in The Gambia.
"Somewhere, this man will have relatives or loved ones who do not know what has happened to him.
"We hope to be able to identify him for the purposes of an inquest to be held by HM Coroner, which may at least provide some answers and closure for those who knew him.
"In particular, we are seeking contact from anyone in the UK that may have been expecting to meet a friend or family member who failed to arrive in December, as well as anyone in The Gambia or neighbouring countries, who may have knowledge about an individual who made travel plans to come to the UK or Europe.
"Anyone who recognises him is asked to contact us at Sussex Police online, quoting serial 101 of 07/12, or contact their relevant authority or Interpol."