I went to England a few years ago for a couple months. I took pictures of a fast-food dish, "chips and cheese" that is uncommon where I live. More than that, the taste of the cheese intrigued me. The pictures were took in Stafford in case regional culture matters for the answer.
I've tried to replicate the taste once in a while, but I don't know what cheese is being used. Internet research points towards cheddar as the most likely match, however every time I gave it a try the taste did not seem to be it. Therefore I've tried to sprinkle various other types of cheese to no avail.
Based on the cultural details above and the provided picture, what would be the type of cheese?
If it is cheddar, is there a "specific type" of cheddar I would have to look for that would taste similarly when used in cooked dishes?