I found this as I was watching Secrete Eaters . THE MEN WHO MADE US FAT is a documentary style show about why we eat the way we do. Also UK based but very interested in the US food industry influence on the UK.
You all might have seen it before but new to me.
The title is " the men who made us fat "
http://www.youtube.com/watch?v=OCqKcOBPss4&feature=BFa&list=PLC95D4B298A5FCF4D