Last night I was at Southwark Cathedral alongside the Thames Path so I missed BBC1′s Countryfile report on the source of the Thames.
I have now watched the programme on the BBC iPlayer. The Thames item is at the beginning of the programme and offers a simple explanation for the often lack of water at the official source.
Sadly the camera did not look downstream from the source to show the indentation in the field but the presenter does walk the dry bed south of the Fosse Way main road. The filming was at the end of last month when water could not be found until Ewen.
We are told that in very dry periods water has not been found until Ashton Keynes.
Watch it here.
See page 211 to 213.