The other day I was trying to hum the tune of Copeland's Fanfare for a Common Man, and what came out was the Channel 4 News theme.
I can't believe that I have listened to C4 News for so many years without realizing that it's a variation on the theme of Fanfare. In case you doubt me, here's the evidence (note in both cases you have to go through a bit of initial burbling before you get to the main theme - it starts at 14 seconds in C4 News and 21 seconds in Fanfare).
Here's the C4 News theme:
And here's Fanfare for the Common Man: