The document discusses using data from the Portable Antiquities Scheme (PAS) to analyze the distribution of Roman coins across Britain. It notes that the PAS database contains over 58,000 Roman coins and allows analyzing the national distribution of coins across more than 2,850 parishes. Compared to previous research focusing on excavated urban sites, the PAS data reveals over 400 new essentially rural sites discovered through metal detecting that have yielded more than 20 Roman coins. Regional analysis of coin distribution is demonstrated for Lincolnshire, and one site discussed in more detail is Piercebridge which has yielded over 100 datable coins.