Good stuff Bennekov! Appreciate the suggestions.
I work closely with a Norwegian gent from Bergen, I just mentioned the Cervisiam to him and he didn't have a clue - more of a wine and lager man. Definitely like the look of some of those though.
Going to Cervisiam's site, they've got some lovely sounding stuff that's right up my street - particularly interested in trying the Banana Waffle and Chocolate Salty Balls Stouts - 12% though! No wonder Red Mist is advocating only having a third! Disappointingly I can't find any UK-based stockists or even the Cervisiam themselves have an online shop, it seems to suggest you need to place a bulk order via email. For someone who just wants to have a try of several different ones, I think that might be prohibitively expensive to import here. Might be wrong though.
Would love to do a craft ale crawl of stuff like the above, just seems like this would be hard to do outside of London in the UK.