 The 1923 Grouping made the L&NWR part of the new London, Midland and Scottish Railway, which closed Charlton Halt in 1926.The LMS was nationalised as part of British Railways in 1948, which ended passenger services in 1967 and reduced the line to single track.Oxfordshire County Council arranged for British Rail to reopen the line in 1987 and Islip station in 1988.