I forgot to say which tins I have.
Tomatoes: (always), for all kinds of sauces, casseroles and stews.
Beans: I agree it is cheaper to cook your own but tinned black beans always taste better from a tin than when I cook them from scratch! Baked beans, chick peas, red kidney beans (which are ludicrously cheap in the UK), butter beans, broad beans, ful medames, borlotti beans.
Meat: Spam (my son and partner like it). Corned beef (ditto).
Soup: Heinz tomato (daghter likes it) plus Baxter's Game soup which I adore! I also like their Scotch Broth.
Fish: Lots of types: mackerel, sardines with and without tomato sauce, tuna, anchovies (always) - I use them in all manner of dishes, dressed crab (great in pasta sauce) and.... smoked oysters.
Fruit: Lychees (which are brilliant tinned and go well with seafood), pears (I am partial to tinned pears!).
Vegetables: Potatoes (I love tinned potatoes - don't get me wrong, I know they don't taste like fresh ones but they have a unique flavour), sweetcorn (I hate it but son likes it), mushy peas, artichoke hearts, celery hearts, hearts of palm.
Pasta: I don't buy the sort in tomato sauce but I rather like macaroni cheese!
Pies: I'm about to buy and try one.
Puddings: Custard (I'm lazy).