The researcher was supervised by a team of Dr Fabio Silva (Deputy Head of Department of Archaeology and Anthropology) and the late Professor Tim Darvill , with both of  whom he discussed such issues. One ethical  issue concerned gaining access to sites which were on private land. This was dealt with by asking permission from the landowner or representative, and by following their requirements, such as how to reach sites, waiting till after harvest, or the breeding period for rare birds. The process of dealing with such issues was monitored by the routine reviews of the project by academics uninvolved in it that are part of the University's academic struture.