I’ve never been to Derby before.
It’s an old mining town: tin, discovered in the 1870s. The town grew up — the population was about 3000 at one point — the mine went away, the town dwindled. The population at the 2006 census was 300. Although it is still a busy little town, except on Saturdays at 4 pm, because of the Tin Centre.
It also feels like the town is clinging to the side of a hill.