Radio 4 is broadcasting a reading from Adam Thorpe's 'On Silbury Hill' each morning this week. I think the episodes are repeated the following day as well at a different time.
The book seems to be his personal thoughts on Silbury, Stonehenge and Marlborough inspired by his time at that school and from readings of the work of various archaeologists and other writers on the subject. Sorry about using the 'A' word in these hallowed precincts but perhaps he could be invited to write another book based on the profound knowledge and findings discussed herein. etc.
Anyway the beeb only keeps these things up for about a week before destroying them. Traditional practice in that organisation I believe.
Here's the link to today's programme on the listen again site if anyone's interested.
http://www.bbc.co.uk/programmes/b04fc21rYou'll need to google radio 4 schedules to get the rest of them.