Excellent well done lads!
I'm suprised you didn't have Phil from Time Team helping you out extracting that.
I have a few questions now:
1. Are you going back for the remains of the other 4x4; if not why not?!
2. What's the plan with the little white "dogger" one; break it or make it?
3. What other relics were lying around in that woodland? It looks the kind of place where you'd find the odd Cavalier lurking, maybe even an SD1 or two.