This is a breakdown by period of the PAS data from Hertfordshire collected by Julian Watters, fairly typical for the pattern from much of the rest of the country:
Period RecordsPalaeolithic 15Mesolithic 112Neolithic 177Bronze Age 145Iron Age 450Roman 6953Early Medieval 424Medieval 2813Post Medieval 1852Modern 7Unknown 72
This is a fair representation of the pre-1700 material collected by the artefact hunting "partners" of the PAS in the region, but is it in fact anything like a proper representation of the archaeological potential of the area? Are there really as many Roman sites in the area as the sum of all the rest put together? The Palaeolithic and Mesolithic together lasted several hundred thousand years, and the Iron Age a few hundred years, but the discrepancy in the number of "data" about them recorded by the Scheme is extreme. Is not this manner of collection of information severely deforming our picture of the country's past? I do not expect Mr Watters will be commenting.