One of the drawbacks of the S&C is that it is not electrified - unlike an increasingly high proportion of the UKs railway network. This means problems for diversions especially. Things are changing though.
Today saw a very long passenger train being hauled over the S&C by a bi-mode electric locomotive with a diesel engine too. The sight was nicely captured by the Kirkby Stephen RailCam as the Class 88 locomotive flaunted its electric pantograph pick-ups retracted whilst under diesel power.
click to enlarge
And at Ribblehead: