The Tudor Tailor is (or are- there's two of them) brilliant! As well as writing a fabulous book which includes patterns even a mathematical twerp like me can scale up, and having a tremendous website, they are also extremely NICE.
I was having a bit of a crisis of confidence over some costume issues and emailed Ninya and Jane with a question. Ninya emailed back within 24 hours with a friendly, informative and reassuring response saying amongst other things that she thought I'd done an excellent job on my costume and wished me all the best for my new project!
So I'd better get on with it I suppose...
(I've put a link to their website on my links section- it seemed the best place for it after all).