[8][9] The line and station became part of the London, Midland and Scottish Railway (LMSR) at the Grouping of 1923.

The passenger service of two weekday trains each way between Mealsgate and Aspatria, calling at Baggrow, began on Boxing Day 1866, and appeared in Bradshaw (as "Blaggrow") from January 1867, under the heading "Bolton Branch".

From November 1878 timetables were re-titled "Bolton Loop" and the service was enhanced: August 1887 appeared to be the line's passenger high water mark.

High Blaithwaite closed in 1921, though a weekday train from Mealsgate to Wigton and back continued to run.

[12] Apart from the colliers' service, by July 1922 the public passenger service (under the heading "Aspatria and Wigton") had evolved to a simple six trains a day - the "Baggra Bus" - plying between Aspatria and Mealsgate, all calling at Baggrow, with no variations by day.