Board Thread:The Reference Desk/@comment-4139960-20131015163144

I don't really recall Major Blake or Alex being given full names in The Christmas Invasion. At the very least, it's not in the credits, nor are they introduced by their full names. I have a feeling that Major Blake is only addressed as "Major", but I'd have to watch and listen more thoroughly to be 100%. Is it from elsewhere, or is it an easy-to-miss detail from Invasion?  