I recieved this from a friend. He said he bought the CD containing it on a small market in Holland for just € 5,-.
It's a demo from Modern Times Rock 'n Roll (or so he says) Other tracks were Great King Rat and My Fairy King, I already checked them and they were just the same version as on "At The Beeb" / "At The BBC".
Though I'm still not sure about this MTRR track. It seems different, it has no vocals but some piano near the end (probably Freddie's) and the tone seems higher.
I dunno it could just be a fake. I uploaded this track to my webspace if anyone is interested in hearing it.
(stream or download, right click and save) link