Dyson don't licence those drawings for publications that are sold Steve. To use them without such permission would be breach of copyright.
Dyson are known to be particularly litigious with those who abuse their intellectual property (they don't always win but they have the cash to try)
Even on sites like this, we have to be quite careful about what we use and how. We can use a certain amount of stuff under fair use rules. Some stuff we must credit them for (their lawyers once told me) and some stuff we simply cant use at all and expect them not to object. We use very few of their images for this reason. Its way easier to err on the side of caution with imagery belonging to those known to be litigious. On a website, you can simply take an image down if the owner objects. You cant do that with a book.
I know that Angus sought advice from an intellectual property lawyer prior to publication of the book. I know some changes were made as a result of that advice. I suspect that if such drawings could
be in there, they would be.
Welcome to the forum BTW.