Foster + Partners Industrial Design worked closely with both the artist, Bill Viola, and St Paul's Cathedral to create a frame, which would support a filmed artwork called, Martyrs, both physically and conceptually.

The screens are held aloft by two slim metal legs, which are narrow in profile and taper as they rise to enhance the sense of bodies raising upwards to the sky. Discreet materials, minimal detailing and a dark, matt finish bring harmony to the juxtaposition of the modern screens and eighteenth-century architecture.

The combined weight of the screens and frame exerting pressure on such a discreet footprint could crack the cathedral's stone floor, so the legs rest on a structural plate below the flagstones, this also provides a hidden route for the power cables conserving the fabric of the building.