Marmite eww my kids when they were little thought it was ok but would hate it now. I had it twice, not a favourite.
Bubble and squeak - weirdly entertaining to eat because it does actually squeak.
Custard - At BT in Cardiff they had it every day on a slow cooker, wonderful warm food.
Things to wonder about:
Sainsburys Rootbeer - two years of my four year stay I loved it because it was the only thing I could find.
American Style - not sure if
UK knows what that means... as it almost was never.
Tinned hot dogs... ugh need I say more.
Combined with this was the incredibly small portions of Sour Cream. Tescos always sold them in what could best be described as individual yogurt cups.