A quick update: here is a picture of an 8ft by 3ft 6in by 2ft unpeeled ash rose arch made for Andrew Oldham at Life On pig Row. Picture is provided by Andrew too. The extra supports shown near the bottom are temporary while the concrete goes off. I delivered the arch in two halves in the back of our new old Land Rover (which is now temporarily out of commission due to a broken winch while rescuing it from a wooded hill)
Rupert, so sorry to see this. I hope it can be repaired. That is one hell of a dented roof. The arch is settled in and the rose I planted by it is coming to life and soon will be scrambling up it. Thanks for the arch, the extra height meant we could get it sunk two foot into the ground for stability and to stand up against the exposed nature of our site. Let me know how you go on with the Land Rover.