Loads in fridges in BHD lounge. Had 2 last time I was there. Only reason I had 2 was because the first one was drunk from an unsatisfactorily small non-Guinness glass. Happened to notice on the way back from the bog that proper glasses had been restocked.
As an aside, I’ve noticed that the bar in DUB is out of Guinness 0.0 about half the time.