Nutsy,
I recommend you get in touch with Henry White at Loday White. I guess you already know they're based in Essex, and they'll know the boat better than anyone. Also ask for opinions on the Spitfire Association website:
http://www.spitfiresailing.org.uk/index.aspIf that was my Spitfire, I'd get it to Henry, asap. I'd go so far to say that the repair will be quick and inexpensive.
Simon