Yes,in our Sainsburys you can get either the small(black covered) Marmite cheeses,OR, get the Deli to cut you a piece of Farmouse Cheddar flavoured with Marmite,the Cheddar just has the edge over the small cheeses.
I love marmite...but have to admit I didn't like the Marmite cheese as much......I tried the mini cheeses. I have also bought marmite flavoured rice cakes....they were disgusting!!..Give me marmite on toast anyday...lol