Very interesting and backs up what I thought that he is pretty much guilty, bright but lacking in duplicity and pm on sense. I wouldn't be surprised if he drank Martini, wore a T-Shirt with spy written on it in bed and wore Tux to meetings.
Durham - apparently - is a uni renown for producing spies.
The language of the Foreign security and PM is interesting. They are "concerned" and will have "frank conversations" (bbc) but I haven't seen anyone from those circles protesting his innocence. My money is on a random Arab guy being...