Sorry for having caused a fuss.
I must have switched to HTML format at some time and forgotten to switch back.
Also at work anyone can send to our email lists (not just members), so I tend to "reply - all" just to make sure that if the question is from a non - member then it gets to them. The HTML header meaning my reply got held up meant it looked like an off list reply.
Again, sorry for the fuss.
Cheers,
Ewan