We found a buyer in March, then had an offer accepted on a house shortly afterwards. All seemed too good to be true, and indeed it was! The survey on the house we were buying uncovered some major structural issues so we've just pulled out 
So now we are under offer with no onward purchase. Anyone else in the same boat? We're still keen to move and our buyers seem very committed and reasonable but I'm wondering how long they'll hang around while we look for something in this slightly crazy market!