Letters were NSATEDARDT and, as far as I am aware, no-one has solved it. Some think it is a misprint, and would have been Eastenders. Guess we are going to have to wait another couple of weeks when they should publish the answer.
Very pleased to see your post as I am struggling with it tonight.
I have exactly the same letters as you do, but cannot get it to make anything.
Can you help me with the last clue, please and explain the answer to me ?
21d Vehicle returns in the dark, naturally (4) T?N?
Is it TANK ? If so, why ?
Thanks