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They will be restricted to Carlisle - Barrow in Furness and will run semi-fast between Whitehaven and Barrow (excluding the Sellafield workers services).
I think there is an extra train in each direction because of the removal of the trip to Preston.
So you would guess they will work a standard 05.xx, 08.xx, 11.xx, 14.xx and 17.xx pattern with no gaps and presume semi fast means mainly omitting the request stops