Complex sentence: The station opened on 28 February 1932, although originally only four of the platforms were in use: platforms 1,2 and 3 on an upper level and platform 6, served by escalators, on the lower level.
Split into simpler sentences: The station opened on 28 February 1932, although originally only four of the platforms were in use. Platforms 1,2 and 3 on an upper level and platform 6, served by escalators, on the lower level.