That Telegraph review is a disgrace, and would be laughable if not so obnoxiously snide, as it betrays so many prejudices in the reviewer's mind.
I enjoyed the first episode mainly because of the pacing. I was a little unconvinced by Wishaw's acting, not the character, but his interpretation thereof
What concerned me much more was the very obvious parallels with the "spy in the bag" case from a few year's ago. It has to be the inspiration but I worry that it's too soon to be making entertainment from such a tragic case. I can't begin to think what family and friends of the victim in that case must be living through again because of this drama