As a Matlock user, am I being curmudgeonly to see this as bad news, with the prospect that trains that pick up delays between Norwich and Derby will be turned back at Derby (or Ambergate) because there won't be enough recovery time at Matlock?
The current timetable sees a 12-minute turnaround at single-platform Matlock, with trains scheduled to pass between Duffield and Belper. Even if you designed your timetable around the wish to give maximum recovery time at Matlock, you couldn't gain more than a few minutes without seriously reducing resilience on the main line.
Are there comparable long-distance services terminating at a single-track station with so little scope for recovery?
I raised my eyebrows at it I must admit. The Matlocks at one point ran to Birmingham and it didn't last long because they were constantly getting delayed. Can't see them keeping reservations either.