Some of the technical and specialist reports relating to the excavations can be found here, along with more details on the relevant local history. (Most have links from other pages too.) Some of the documents are very large so download times might be an issue on a slow internet connection.
Background and History
Geophysical Survey (report)
Geophysical Survey (images) (8 mb)
Data Structure Report (7.2 mb)
2014 Data Structure Report (4.5mb)
Ceramics report (2.2 mb)