The September issue of British Archaeology is due to hit the newsstands on Friday.
As Earthstepper has pointed out, subscribers get it a little earlier.

The caption to the photo is:

"Heritage Action met at Silbury Hill, Wilts on 29 May, the anniversary of the discovery of the collapse in the mound, 'to expose English Heritage's neglect of the world heritage monument'. Such demonstrations attract significant numbers of pagans."

I presume that Jenny Blain took the photo, as it's in an article by her and Robert J. Wallis about modern British pagans' interest in ancient sites.

She managed to avoid getting me in the pic.