On a chip-related note - while I'm a fan of chip shop chips from a decent place, I think *some* frozen chip brands are not only obviously healthier, but can be as good if not better. Try Harry Ramsden's or the McCain ones with the potato skin still left on! They are extremely chunky, virtually grease-less, actually taste of potato and form a perfect sandwich when coupled with surely the supreme condiment - HP Brown Sauce. My mouth is salivating as I type.
And you have the added benefit of guaranteeing no animal by-products were used in the cooking process.