Following the accident with Snowdrop it looks like just the outer panels are damaged. I don't think it warrants a reshell. The car needs restoring so I might go that route next year when finances improve.
Anyway, back to the present. I called in at the garage where the 1850 is and the mechanic hasn't had the car tested yet. I'd mentioned that it needs welding so he's gone round the car to see what needed doing. I took the opportunity to show him what Brian and I had found. The mechanic reckons it'll cost around £400 to get it through which I'm pleased with. With no road tax to pay for I can throw a bit of money at getting that all-important MoT certificate and it'll be ready by Friday.