Colour of Paint
On the surface, this is not a good indicator. The colours most often associated with Panda Cars are Bermuda Blue and Police White. However, Minors used by the Police could also be found in Dark Blue, Black, Old English White, and probably a few other shades as well. Moreover, when Police cars were sold on, they were frequently given a coat of paint to cover any markings – in at least one case, a Bermuda Blue car had turned to green by the time it was sold on. Also, not every Bermuda Blue car was a Police vehicle, and plenty were sold to members of the public as their first owners. Finally, consider what colours previous owners might have used during restoration.
However, if you are lucky enough to have a car that has not previously been stripped to bare metal, then careful rubbing down may reveal underlying paint, which, particularly if it’s Blue and White, will be a good clue. When rubbing down paint, please do take photographs of any colours that you find. This information is invaluable for historical record and essential if you want to restore the car to its Police colours – there is no precise specification for where colours began and ended, each workshop had its own ideas.