In Derby you also have Holt's on Nightingale Road. Less high end stock but workshop is super quick and reliable. Especially compared with Samways or Mercian.
As the-muffin-man says it was Cyclone before MA and I bought a Kona and a Sunn from there and loads of bits. Andre's sidekick John was an expert in samurai swords or something! Andre wanted to do something different as he had run the shop for ~10 years. Miss that shop…..
Belper (or Duffield) could be good as reasonable population, east access to Derby / Peak though parking can be an issue in Belper. Something with a cafe? Get people in for an espresso and muffin and sell them some carbon wheels!
The wait at Samways for maintenance has got long, and Mercian is worse so there is space for a good workshop to match Holts. Once people are in the door you always have a chance of a sale.