It was pretty good and had Francis Pryor on it (him being both Time Team's 'Mr.Prehistoric' and their 'Mr Wetlands). He was being rather quiet about usage, although he did of course push it as being ritual. The other guest-archaeologist was really sure it was functional and was used for herding cows into. This being due to the high phosphate levels and their being a lot of burnt patches. However the nutzoid layout (two concentric rings of tens of small, elongated pits. Not yer average causewayed enclosure) didn't seem particularly practical for containing livestock. And to get 'em there they would have had to have trudged through lots of boggy, marshy, watery fenland, hardly cattle's favourite terrain.
That's as much as I can rememember as I was in the middle of the flu and kept nodding off...

Thanks MJB. I might go and take a look next time I'm in the area (not that I expect to see much).

K x