Last day it's available & won't be to everyone's taste (plus their geography is questionable - looking at Ribblehead Viaduct from Honister slate mine), but they do visit Blue John Caverns & Mother Shipton's:
https://www.channel4.com/programmes/sightseers/on-demand/44321-001
https://www.channel4.com/programmes/sightseers/on-demand/44321-001