A Europe-wide database of unidentified bodies should be established, the UK Missing Persons Bureau says.
Joe Apps, who heads up the bureau, told BBC News it would help families who were searching for missing loved ones.
A year ago, the bureau launched a website containing images and distinguishing features of about 500 unidentified bodies found across the UK - a third of the total.
The bodies of four missing people have been identified as a result.
One of the matches followed a call from a man who thought an image on the website was that of his brother, who was last seen in 1994.
Fingerprints proved it was.
But Mr Apps said that, with so many people moving to and from the UK, a wider geographical pool of unidentified remains was needed.
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