Hehe, i hear the winner recieves £20,000. With 1/6 odds of winning that, id be very surprised if competitors werent clamouring to get in.

Odds (I think)

Robochicken: 5/2 (best bet)
Ripper: 4/1 (good odds)
Kan-Opener: 10/1 (fair chance)
Raging Knightmare: 8/1 (decent chance)
Ewe 2: 15/1 (outsiders)
Flipper: 100/1 (hmmm)