The agent seemed great and came back to us with answers quickly. It turns out now it's because she just made the answers up! The website clearly said that there was no onward chain. They wanted a quick sale. Great we thought- survey done, local checks done, found extension wasn't recent nor the boiler new either. The owners cannot 'move out whenever' and say they've never said there wasn't a chain. As others have said, you cannot get hold of the agents now- after a month or two they get paid their fee and they're off with zero accountability. We're now stuck having spent a fortune on getting to the point where we're ready to exchange. Mortgage offer likely to expire but zero we can do. At least with a high street agent you can pop in on them.