We popped in a couple of times but Vertigo was a dead zone; the Sub Pub 'vibe' we had in the early-mid 80's was long gone by then unfortunately.
From the useless trivia vault Felicitas got its name from an ex-maintenance/cleaning lady named Felicita Gomez who worked there from 1967-89. She was a tiny and feisty spark-plug of a woman, originally emigrating with her husband from Spain. Great person, kind of an unofficial den mother to those of us who both worked and frequented the pub - which was waaay too much for me from 1981-6. Thursday night student "sub pub" nights were epic in those days. Between the lounge and the pub we were easily jamming 500+ people in there, far beyond the legal capacity, lol. We had some great bands in there too including a top notch ska-reggae outfit called "Bad English". Great memories....