I believe there has been a small charge for this unless you are a long term customer of a dealer. If you have one you use regularly and they have serviced the car then ask them if they would be kind enough to do it based on a telephone session. (Facetime/Skype/Whatscrap/other options exist) is a wonderful thing.
I would ask the insurance company if they have a specific list before you go ahead as many of the dealers with long standing experience may have exited the approved dealer plan in the last few years and so may not qualify. They are no less skilled however they are no longer "authourised dealers" of the factory. Worth a check.
Everyone loves a Morgan. Even me, unless it's broken again.