British gunmakers thrived in the 1800s.
The original shotguns morphed from duelling pistols, which were of necessity made exceptionally well, and the sporting guns which evolved from these were made with the same care and attention, although probably the gunmakers in rural towns were nowhere near the high standard of their London or large city counterparts.
The wealthier amongst the population enjoyed country pursuits such as fishing, shooting and hunting, and when the countryside became easier to get to due to the new railways etc., more and more people were eager to join in the fun.
It was common for Lords of the Manors to hold Shoots on their estates, and these became hugely popular social occasions, resulting in an explosion of gunmakers in towns and cities alike, who would not only make the guns but also repair or personalise them.