 Roberts became the site director of the Boxgrove project.In 2011, Roberts told interviewers from the student-produced archaeological magazine "Artifact" that Boxgrove was "a fickle mistress indeed" and that whilst he wouldn't change his experience in investigating the site, the excavations "extracted a very heavy price" from him, "a price that I am only just at the point of paying the final instalment on".For this reason he found that he often hummed The Specials' 1979 song "Too Much Too Young" to himself when thinking about the project.