There are many thousands of such court orders issued each year, and items that can't be returned to their legal owner are auctioned off at local auction houses all over the UK. Police auctions are an established route used by regional police forces across the country to dispose of proceeds of crime, lost and found, seized, and unclaimed stolen and confiscated property.
Police auctions tend to conjure up images of beat up cars confiscated from drug dealers and mint condition police cruisers that—for one reason or another—never saw service. The reality lies somewhere in the middle, and there are some good deals to be had so long as you're careful, and absolutely sure about what you're doing. Let this list be your insurance.