Personally, I'm still not exactly sure what an Ultra Lounge is, and how that is different from a nightclub, but Pure, in this much re-purposed modernistic building on Berryhill Road was one, though it is one no more.
If you look closely in front of the door in one of the shots, you can see a bag with the 2014 phonebooks. Like trying to determine which issue of The Free Times is in the rack in a closed establishment, unclaimed phonebooks are another timing clue. In this case we have further evidence however in the fight poster which touts a 22 February match. Given all that, I'd put the date in early February 2014. I have to say though, that the place looks pretty decrepit for having been open that recently. The dress-code posters, for example, have already faded into illegibility. (Interestingly, the last time they tweeted was 2010).
(Hat tip to commenter)