Spent the day putting the final touches to the chicken run. I reckon it's now totally chicken-proof, cat-proof fox-proof (although I'm aware those are famous last words).
My favourite thing about it is that it didn't cost a penny. We built it entirely out of materials we already had, and hadn't even paid for in the first place. For example, the chicken-flap has a hinge made out of the woven nylon handle of an Ikea carrier bag, cunningly removed in such a way that the bag is still useable.
Went round to the neighbour who helped us round them up twice. I reassured them that the chickens were now securely contained, and gave them four eggs as a thankyou.
So hopefully that's the end of the chicken dramas. They're still free-range, just not quite as free-range as they had been, but that was altogether too free-range for my liking.