Complex sentence: At "The Grouping" in 1923, the station passed into the ownership of the London, Midland and Scottish (LMS) railway and, upon nationalisation in 1948, of the London Midland Region of British Railways.
Split into simpler sentences: At "The Grouping" in 1923, the station passed into the ownership of the London, Midland and Scottish (LMS) railway. Upon nationalisation in 1948, the station passed to the London Midland Region of British Railways.