I don't think I believe Thames Water. Over the last few years they have dug up various bits of Ewelme Road (including outside my house) and repaired pipes and what seems to happen is that the leak moves to a different part of the road (this can be seen if you look at the patchwork of repairs that have been done over the last 4 years) To my mind these problems became a lot worse when the road was resurfaced (aprox 4 years ago?), a huge truck-like machine was used to strip all the old tarmac off and I remember thinking at the time that it looked very heavy. It could be possible that this process caused further damage to already fragile pipework.

I wonder if anyone from Thames water would care to tell us how old the pipework under the road is?