Sandwich horror

One question that we get a lot is: "what food do you miss from the UK?". Really we haven't been here long enough to miss anything. However, if you pushed me I would say an M&S tuna and sweetcorn sandwich. Actually, any M&S sandwich would be good. You see, for those of us who don't like egg, tomato or random beetroot in our sandwiches then New Zealand is not the best place to look for bread-based lunchtime solutions.