Mm, chips in the library. I mean, outrageous! chips in the library! I also enjoyed the storyline this (last) week, but thought the dialogue was handled much worse than in week 1. It seemed to be aiming for an over-elaborate-descending-into-bathos comic effect (Sherlock does this quite well) but failing.
Thank you for identifying the building, by the way! I failed to recognise any of Bristol at all.