I wonder if ///gears.grin.than could be the three words encoded into the British 50-pence coin released on July 4 to commemorate the work of mathematics genius, ALAN TURING.
The University of Cambridge was where Alan Turing spent the happiest years of his life.
Look at the image of the coin. See the vertical line of letters closest to the circle containing Alan Turing's name, There you will find 'GEARS GRIN THAN'.
I'm betting that's the clue you are asked to find in the latest What3Words Media Release, ///gears.grin.than being the W3W address for the boathouse ramp at Cambridge University.