Police are trying to track down the owners of a haul of jewellery.
Officers believe it is likely the items were stolen in the Walworth area at some point before November 20, although it is not yet clear.
A 44-year-old man has been arrested and released under investigation.
Anyone with information is asked to contact Detective Constable Gordon Taggart by calling 020 7232 6226 or emailing gordon.taggart@met.police.uk.