Upon the grouping of the G&SWR into the London, Midland and Scottish Railway during the Grouping of 1923, the station was renamed Ardrossan Winton Pier on 2 June 1924 in order to distinguish between the Ardrossan Pier station on the former Lanarkshire and Ayrshire Railway (which was renamed Ardrossan Montgomerie Pier).
In 1923, following the Grouping of railways, the G&SWR was incorporated into the London, Midland and Scottish Railway. The station was then renamed Ardrossan Winton Pier on June 2, 1924 to differentiate from the Ardrossan Pier station previously managed by the Lanarkshire and Ayrshire Railway (which later became known as Ardrossan Montgomerie Pier).