As far as I can see, bisto granules is the most cheaty way to make gravy. (correct me if I'm wrong!)
I think there is three tiers to gravy making. Granules is at the bottom, bisto powder is in the middle, used to thicken up thin gravy/juices, and proper gravy is made using juices from meat and flour etc.
So in what way is bisto 'proper geavy'?! The only way to get less proper is to have no gravy at all!!!
...Rant over.