Peugeot Speedometer - mph or kph

Hi I picked up a new Autosleeper Cotswold EB three weeks go and on leaving the dealer discovered that the speedometer only had kph on it and no mph.  Slightly disconcerting when driving in a speed limit and having to do calculations as you go.  Wondered if anyone else had ahd this problem.  Still waiting to see what is gooing to happen with it.