Congratulations to the Waters Green Lemmings, who were the only team to get this question right on the night (passed over by the Harrington 'B').
The Swiss railway clock, as its name implies, was designed for the Swiss Federal Railways (SBB). Its minimalist design has won numerous accolades, and it's regarded as a Swiss national icon.
The Canary Wharf reference is to an art installation by the German industrial designer Konstantin Grcic, which was ... errm ... installed outside Canary Wharf underground station in 1999. This consists of six clocks in the classic Swiss Railway Clock design, each on its own stand, a few yards apart. Each clock has two faces (back to back), and on each face one of the hour markers is identified with the appropriate number. Twelve faces, twelve numbers: a different number on each clock face.
Click here for Wikipedia's article about Hilfiker's design (with pictures, obviously), and here for a blog entry with pictures of Grcic's Canary Wharf installation.
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