Looks like you are sorted but I can add to the recommendation for M Shaw. Works in Portland works the old cutlery building in Sheffield where Stu Mitchel has his workshop. He made me a Mary Rose brand 15 years ago which is still as good as new and cost a fraction of what I expected.
The Oseberg project looks very interesting, do you have photos to share? Where is construction taking place, do they need more volunteers? I think hewing one of the planks on a project like that would be a wonderful thing to do.