Ermmm... my hubbie and I both think its crunchy nut cornflakes ? Think it was on the advert where the man was in a hotel and hid under the trolley thing to eat them - does anyone else remember that?
It was Kellogg's Bran Flakes the last 500 times this was asked and it will still be Kellogg's Bran Flakes the next 500 times it's asked. Not Crunchy Nut Corn Flakes, not Fruit 'n' Fibre, but chuffin' Bran Flakes.
for incontivertable proof and evidence go to http://www.tv-ark.org.uk/ select adverts from the list on the left, then go to h - m, under "k" for kellogs BRAN FLAKES there is the actual actual advert.
plus - if you scroll down that very page a bit under "kellogs fruit and fibre" is the advert you are talking about with ross kemp .... note no exclamations of how tasty they are in that ad