http://en.wikipedia.org/wiki/Cannon_Fodder#Cannon_Soccer
I've read on Wikipedia that a free minigame version of Cannon Fodder released with Amiga Format, the amiga magazine. Does anyone have an idea of where I could find this? I'm pretty sure the disk image of it would be legal seeing as it was given away free.
Anyway, the game is basically 2 levels of Cannon Fodder where all the enemies where Sensible Soccer football players.

While this does sound vaguely familiar to me, I haven't owned an Amiga in ages so if I had a copy it's long gone.

You can download the coverdisk but you'll need winuae (or another amiga emulator).
If you don't have an emulator then that can be found easy. You'll have to find the kickstart roms yourself, can't help you here.
Scroll down to Amiga Format 54 XMas Special and click the download ^_^

The kickstart roms are included in the Amiga Forever package. I've been using it for a couple of years and it's just great.

Thanks a lot.
Edit: Wow! That website is awesome!

Wow I didn't know this! Thanks for telling me! I bet my brother will love this since he was a massive Sensible Soccer fan and loved to play Cannon Fodder.

I remember playing a version of Sensible Soccer with a grenade instead of a football... is that the one you played as well?

Haha, I remember that one too. When the ball started glowing red it was time to get rid of it to the opposition! Can't remember what it was called though or whether it was just a small demo that came on the front of a magazine.