I just wonder if "Tinkers" like the one in "Willy Wonka and the Chocolate Factory" who has a cart of meat cleavers still exist to this day?
In the UK, It's possible that there are one or two still in operation but it's more likely that these have died out.
In the past, people didn't have access to high quality knives or sharpening equipment and a these knife grinders / tinkers could travel from town to town making a living.
With the advent of higher quality (and cheaper) steel and home sharpeners (especially the electric type), the need for itinerant workers like tinkers fell away.
Commercial sharpening firms (for hotels / restuarants / butchers etc) do exist but these are generally "bulk" deals rather than a home service for one or two knives although many will offer the service if you call in.