Surveys have come back and everything was OK although there was a question about access to fresh water which was news to me.
Seems that there is a water source on the piece of land next to mine that a third party has access to. It seems that the solicitors mixed up the documentation and the water source was assumed to be on my bit. A quick phone call to identify where the location was and it was solved but it took too long to modify the forms and although we would have managed to finish in time for this weekend it was not to be so no such luck.
Exchange is taking place next week when we get back from our Easter break.