One of my ltd directors has just announced that due to previous employment, he files tax returns to the high security team (his words, I know what he means but don't know their actual name).
This is my first client who falls into this category and as far as I am aware, in practical terms it just means that we do a paper SA100 and a paper 64-8 ie nothing electronic.
Am I right? What else should I be aware of? Do I use the normal addresses?