In 2003 Professor John Barrett of the Department of Archaeology, University of Sheffield and David McOmish of English Heritage investigated All Cannings Cross - Diary here and preliminary results pdf.
I showed them this aerial photo in which they identified another dark splodge towards Stanton St Bernard. The All Cannings Cross Midden site is to the top left, the new one is to the right of centre.
I walked across the site early the next morning and identified it as being stuffed with pottery and bone, another midden site.
In 2004 the site at Stanton St Bernard was investigated - details here
Full results have yet to be written up.