I'm sure I can organise the set(s?) you want, from over here, if you'd like.
You'd need to PM me the particular site you're looking at (Royalmail.co.uk ?), and your details to forward them.
Interesting to note that they're 'motion' stamps - a first, I believe.
I'm really pleased that Gerry Anderson is actively involved with another tv project at this stage in his life. :) He didn't say, but I'm guessing it'll be another 'CGI' effort, like his 'Captain Scarlet' update was.