[9] When built in 1896 the station had a single island platform serving both tracks.

Each platform has a single stairway linking it to the ticket hall, causing congestion during peak hours due to conflicting passenger movements in the same space.

Originally, the surface access to the station was located on the ground floor of an adjacent building on the east side of the street.

This building was demolished in order to insert the moving walkway to Queen Street mainline station and today, a gift shop now stands on the site.

In line with the pedestrianisation of Buchanan Street in 1977, two street level entrances were added - located in the middle of the former roadway during the modernisation scheme, with escalators serving the northern entrance and a staircase at the southern end of the ticket hall.