Just thought I'd let you know that the BBC Gloucestershire and BBC Wiltshire websites both have spin-off features from this series - a virtual tour of some of the counties' best ancient sites.
The Gloucestershire sites are described by Professor Mark Horton:
http://www.bbc.co.uk/news/uk-england-gloucestershire-12499444
And the Wiltshire ones are described by Phil Harding:
http://www.bbc.co.uk/news/uk-england-wiltshire-12499452
Hopefully it'll be of interest!
Regards,
David
BBC Gloucestershire
What I didn't know, but have learnt from your link, is that Bagendon was the site of an Iron Age city and marks the beginning of 'history' rather than 'prehistory' as the the copper and silver pre-Roman coins were found there. The Romans, however, chose Cirencester though to built their city.
Great stuff - I'll be back to look/read some more.