Anyone mentioned Splicer yet?
So did I
5-4-3-2-1s were often in my lunchbox
5-4-3-2-1 was a chocolate and wafer bar, not entirely dissimilar to a Blue Riband but I think it had an additional biscuity layer.
http://www.completesh*te.com/davethewave-adverts/
You have to replace the * with an i