The Portable Antiquities Scheme (PAS) is a project run by the British Museum which encourages the voluntary reporting of archaeological artefacts discovered by members of the public in England and Wales, particularly metal detector users. Finds are recorded onto a database (available at www.finds.org.uk), and this resource now holds records for over 800,000 archaeological objects, a figure which increases on a daily basis. Since its establishment in 1997, it has become a key resource for archaeological researchers. Around 40 per cent of the artefacts recorded on the database are of Roman...