Excellent quality (usually) but they are light duty guns, typically. The single trigger versions have a single trigger that is, well, English.
I used to see a pilot a couple times every fall, who flew for British Airways, and used a Boss 12 gauge O/U, that was likely worth more than my little house. He hunted woodcock at a couple larger WMAs that he had become familiar with, and it was a rare year that he fired the gun more than half a dozen times, since his hunting style had him waiting until the pointer went on point, loading the gun, shooting, and then sending the retriever into get the woodcock, (he never considered shooting a grouse or pheasant, although one could find all three where we hunted) while the pointer remained steady. His own view was that the English O/Us were for days that didn't involve a driven shoot, with a longer than usual break for tea in the afternoon.
I believe he was quite right. His Boss was a very light gun, and would have likely been unpleasant to shoot a few rounds of sporting clays with.
He also called my Gordon a "meat dog" after he saw him point a grouse while retrieving one I had killed not thirty seconds prior. I shot the second grouse and asked if my Darne 20 was a "meat gun". "So it would seem" I recall him saying.
He was right about that, too. Wish I knew what happened to him, and that I hadn't sold that long barreled Darne 20.
Best,
Ted