The only booked workings are for Toton 20s to Skegness.
These trains run Monday to Thursday and Sundays from Nottingham, Leicester and Derby (Tuesdays, Wednesdays & Sundays) or Burton (Mondays & Thursday) = 3 pairs
And one from Derby on Saturday = 1 pair
Theses can all so produce pairs of 25s, 31s or single 37s or 45s and very occasional drop a pair of Tinsley 20s
Tinsley and Immingham locos tend to rescue failures in the Sheffield or Doncaster areas, they can work railtours and ADEXs
Eastfield and Motherwell locos can produce on the Glasgow test train, ADEXs to Spalding and Scottish Franconia days as well as failures
Haymarket locos work failures, the test train and work train during the month of farce.
Two trains to watch for 20s are the Monday - Friday 14.38 Paignton - Leeds and the Saturday 09.36 Penzance - Wolverhampton which can both produce Toton 20s forward from Gloucester