Naah - they stick it on the shelves next to the Jam and the Honey and the Peanut Butter, all the stuff you spread on bread, though not necessarily at the same time.

Bovril on the other hand, though you can spread it on bread, is primarily for mixing up with water to make a drink, or putting in dishes to give a meaty flavour - sort of solid gravy. As the name indicates, it's got beef in it somewhere. So has the third product, OXO, which normally comes in cubes, though you can get an OXO spread.

Useless bit of information - at one time both Bovril and Oxo use to make chocolate bars. However Marmite does not appear to have done so.

Checking up on whether that was the case, I Googled, and came up with a page that suggested that, so far as people in tye UK are concerned, American Hershey Bars are "definitely the Marmite of the chocolate world. You either love it or loathe it".

The site includes quotes such as this, from "A customer from East London":
"This is the worst excuse for chocolate I've ever tasted! The good ol' USA usually comes up tops with most things but I'm afraid chocolate is not one of them! This chocolate tastes like a mixture between smelly socks and strong cheese..."