The photo below comes from Number 10's official photo page, and is said to show Number 10 'celebrating' Red Nose Day by displaying a large red nose on the door.
Now, I don't know about you; but if I were looking at a door with the characteristics of a face - or indeed an entire body - on it, that's not where I'd put the nose. This looks like more Red Hernia Day.
Update: Having looked at this photo again, I'm pretty darn sure that nose is just Photoshopped -and not very well - onto the original picture. How brilliantly Labour; Photoshopping support for something into photographs.