There's many a slip ...

Of course I shouldn't have said that we'd exchanged. In retrospect, I was jinxing the entire affair. Shortly after my post, PJ told me that our solicitor had rung him and said that the exchange was temporarily on hold -- while our vendors' vendor asked to see their current buildings insurance policy. Of course it did! I mean, what could be more relevant to buying a different property than an existing insurance policy -- and three months into the process to boot!!! Apparently, it should all be resolved on Monday. Or Tuesday.