I know Fiona... its shocking behaviour, isn't it?!
There's a good introductory article (which briefly mentions corned beef too) on hidden carbs at
http://www.lowcarb.ca/tips/tips009.html
As for Hellmann's... there's specific mention of it at
http://forum.lowcarber.org/showthre...&threadid=31174 in an overall mayo thread by Karen.
If its any comfort, I used to
adore Hellmann's... couldn't eat enough of the stuff! Then I started making my own mayo, and I have to say I wouldn't switch back for anything now... Hellmann's (or even the luxury style mayos most stores stock) tastes really synthetic and ugly to me now.
At the end of the day, with most things (including quorn before folk wonder if I apply the same thinking to myself!
), there's a
very good reason Atkins so actively discourages eating processed food.
You do have my sympathy living in Scotland... and my envy! I still say the friendly people, stunning countryside and gorgeous cities (well, Glasgow and Edinburgh anyway!) outweight the carb heaven that is the Scots diet!