I would have thought that you of all people would have more important thing to worry about. Such as how to switch off you gas boiler or perhaps you have sorted that out and so need something new to bother us about.
Cymro. and all others, as I said to GANDALF <|:-)>, I am not worrying about this add. It is obvious to me that no one else is interested in this appauling add. I am perfectly happy with my boiler instalation, but mearly pointed out on that thread that at the time I had no idea how to switch it off or where the switch was located.