Sheffield Cutlery
The City of sheffield was (and, to a lesser degree, still is) Britain's 'Steel Town'. It was the biggest centre of Iron and Steel making since the start of the industrial Revolution, and perhaps before. The Cutlers of Sheffield used the best of the local steels to make their wares, and made them well and with suitable pride. Anything made prior to the 1960s/70s is likely to be a quality piece. The rot set in when the general 'standard of living' for the 'working classes' rose in the late '60s, and 'the masses' aspired to Sheffield cutlery. The Cutlers responded by making cut-price 'BOL' sets for this new market. Some are reasonably good; others they should have been ashamed of.
Something to keep an eye out for is Sheffield 'tool steel' (non-stainless) kitchen knives. They are made from 'proper' high-carbon tool steel, and once properly sharpened will hold a razor edge for a lonnnnnnng time. Ideal for fine cutting of meats and bread, they cannot be used with acidic foods, as this will corrode and blacken the surface of the knife, and also taint the food with a 'metallic' taste.
I have several of these (which I understand are no longer made - something to do with health and hygiene regulations) and am always seeking more in my local 'thrifts'. You can usually tell these at a glance because the steel is 'duller' and there will usually be a few 'rust spots' from poor maintenance. So long as these are not too deep, they needn't be a problem, especially for 'dry use' like bread.
I hate using a serrated knife for cutting bread- it's so wasteful. I use a sharp, Sheffield tool-steel knife, and can get the very finest cuts with no crumbing. Happy hunting y'all ;-)
All best
Dave T