Double time. A shadow of time. One more time. There are two clocks at St Pancras International station. The black clock is an art installation titled "One More Time" by Cornelia Parker. The clock, made by Dent, is an identical replica of the station's clock also made by Dent (the same people who made Big Ben). This one in reversed colours, a black face with white hands.
Parker says the piece is intended to invoke mediative thoughts of the passage of time, life, and mortality.