Went to a property which was for sale but no contracts had been signed. The prospective purchaser wanted a quote for a new boiler so I went along with estate agent to view. The first thing I noticed was the old boiler; it had been drained down and disconnected from the gas supply. Good job it had! It was a Glow-worm fanned flue, mounted on an internal wall and the flue had been completely boxed in a void for approx 1.5 metres, next to an old chimney. Although I didn't inspect inside the void, I can only suspect the flue had terminated inside the chimney! I've never seen anything like it. This can't be acceptable and I can't think why anyone in their right mind would install such a lemon. Hope I get the job cos I'll rip the void out and post some pics.