Tinned fish is fine. I like the small tins the contents fit on a couple of slices of toast rather well.
When I was young the family used to buy tinned salmon. Pink usually unless they were feeling particularly in the money when they'd get red. Good in sandwiches with slices of tomato and a bit of vinegar. I still get the odd tin, but not so often.
Tuna, well in those days didn't get any, but today it is a favourite mixed with low fat mayo and put into baked potatoes. A little veg (sweetcorn more often than not) and there's dinner.
Salad cream is nice. Not had it for years though. I suspect it wouldn't seem the same if I got it now.