[2] As the building was designed to operate as a multi-use venue, the arena-style seating was used to avoid limited visibility.

This proved useful for sports such as snooker or boxing, but rendered a number of seats unusable during performances that utilised the proscenium.

[1] A review of the Hexagon's architectural design in a 1979 edition of the Architects' Journal surmised that dramatic performances were seen as a low priority in the design—despite an estimated quarter of all events being of this type.

The theatre floor, which usually holds stall seating, is adjustable to allow a contiguous service with the stage, providing a 517 square metres (5,560 sq ft) surface.

[1] In acoustic tests performed by Sound Research Laboratories,[5] the venue was found to have a short reverberation time—roughly one second in theatre configuration—which results in a high objective clarity.