This is an article from Süddeutsche Zeitung (8th/9th May) my friend brought me this week and which apparently hasn’t been published on the internet.
I don’t have the time atm to translate the whole article, there’s not much new stuff anyway. Just the very last question is quite interesting:
Interviewer: There will be three more cases of “Sherlock”. After that it’s supposed to be finished?
BC: My colleague Martin Freeman who plays Watson and I have sworn to ourselves that we would stop at once should we have only the faintest suspicion that the show is only continued for financial [commercial (?)] reasons. And since the quality of the scripts has been very high from the beginning, it’s becoming more and more difficult to find new cases without slipping into silly exaggerations. Basically you should “never say never”, but in case Sherlock is continued after the new episodes, I would definitely be in favour of a very long hiatus. If you don’t take care the weight of such a popular role might crush you.
(If someone wants to translate the rest, knock yourself out, I can also give you higher quality photos of it, should this be to small to read comfortably)
Edit: Open in new tab!
Interesting answer. Thanks for letting me know about it!