Seeing this on my yelp review made me realize that I haven't been here in over a month! I must go, immediately!
I always get the vegetarian Mexican Cornish pasty. SO good. They use quorn ground beef, which is by far my favorite "fake" meat on the shelves in the store. The best part about quorn is that they do not use soy. They use mushrooms! It tastes very authentic and finally, FINALLY, you don't have to be that weirdo that orders the only vegetarian menu on the item. You get to indulge in the meat and taters attitude of the rest of your table.
I highly recommend getting the tea with lemon. It is quite different with almost a bread-like taste. The kettle alone makes the tea worthwhile.