It is even rarer to find an intact glass bottle (the older it is, the more completely frosted over) or Roman Samian ware, so it is a thrill when someone finds a piece.

BBC: London from the tide line

Metal detectors have been used on the site, turning up large quantities of lead, while other finds included high quality Samian ware pottery, made France, and exported all over the Roman Empire.

BBC: Roman settlement uncovered by builders in Flintshire