The BBC inadvertently mistook a cabbie at the studio there to collect technology expert Guy Kewney for technology expert Guy Kewney, and interviewed him live about the recent Apple vs Apple court case.

You know that dream you have sometimes when you're on stage but can't remember your lines? That's what it felt like for this guy. I know that for sure because of his expression as he is introduced. Kewney himself was watching the monitors in reception.
You can imagine how it happened, though – some runner walks out into the holding area, calls "Guy Kewney?" and the cabbie there to collect him understandably answers. I wonder if he went through makeup? He is wearing a lapel mic – you might think that would have given the game away, but in television folks are always bustling around you, pinning something here, pressing something into your hand there, hustling you through this doorway or other.

Play it again. There must be seven different expressions flit across his face as he's introduced.

The BBC covered the story itself in News Watch; for more, watch this video.

ETA: Oh bugger: turns out the real story isn't quite as entertaining. Ah well, I shall just chose to disregard this new evidence.