A) I have sent a copy of my manuscript to a graphic designer I wanted to work with without an NDA/ any form of contract signed. I now no longer want to work with him. I have evidence that the manuscript is mine and I trust he won't do anything with the work, but are there any actions I should take to ensure that he doesn't? He is based in Scotland. I am based in England.
B) The graphic designer I do want to work with is based in Australia. Do I need to issue him and NDA? Doesn't an NDA require a witness? We are in two different countries, how do we achieve this? Is it even necessary.