As the title suggests, I actually spotted one of the rare beasts yesterday (Saturday), heading south on the M1, early afternoon, somewhere between jcts 14 & 17. I think it was silver - possibly grey.
Such a rare sight. Looked lovely.
I was heading north, toward Stratford upon Avon, in the campervan, to get electric power steering fitted - wow, what a difference it has made! I'm no longer trying to use the steering wheel to shift a giant lump of concrete!