... Brian Potter and Andy Pipkin sing.
I have bought the video & song on iTunes already, I urge you to do the same, it is a classic.
It will be #1 next week on downloads alone, and deserves to be, not just for the good cause, but for the fact that it is comic genius!
Blair also goes up in my estimation by about 100%, to have the piss taken out of him by Catherine Tate in that way was just brilliant.
Link to iTunes