I looked up the flight details last night and the minimum price is coming out at £58 return, more likely (i.e. friendlier flight times) coming out at £112. For that, I figure it's gonna be better to drive it.

Might take a look nearer the time to see if there's any last-minute discounts, or maybe if enough are interested we could look at a group booking. I'm a bit wary about chartering our own plane as that's what the rugby team did in Alive and I'm not crashing on Dartmoor and resulting to eating Smurf. Plus I have visions of Smurf starting the cannabalism before the plane develops any problems...