Day 236/16. Google Earth?

Sitting in the garden at lunchtime today enjoying a coffee, I noticed this aircraft flying in a very regular pattern over us.
Gradually working its way north from Southampton towards Winchester in long sweeping passes, it was obviously surveying or photographing the area, perhaps for Google Earth. Must be very dull for the crew on a hot sticky day like today, presumably its all automated and they just sit back and look out of the window.