There was news recently that Roman coins had turned up on a beach in Uist in the Western Isles of Scotland (which was outside the Roman Empire), and the excitement this had caused amongst local Historians and Archaeologists.
Personally I don't find the idea so exciting or strange as Roman trade was well beyond the boundaries of the Empire, and coins have been found as far afield as East Africa (Imperial coin found Nairobi), India, Ceylon (The Roman coins are certainly known to have been found in Ceylon, beginning with Emperors Nero and Vespasian), Vietnam and China, so 30 miles away from mainland Britain seems nothing odd.
