I seem to remember Land-Rover having something to do with that series 3, apprentice show piece or what not.
As for owning one yourself, I presume the whole point would be to have it looking shiny all the time? I think you'd be out side polishing the thing every other day, as ally goes dull/corrodes left bare.
You could clear coat lacquer it after polishing, but it might scratch or go milky.
And there's the external steel bits to consider!
Best off with a respray (in silver?) I reckon.