It drove me nuts too... I even went to the transport museum in Covent Garden to leaf through various bus books. I was turfed out for not wearing an anorak!
Blue and Yellow were also the colours for Birmingham buses back in the eighties. May have been Coventry too. No clue about the venue though...
I will have an deffo result shortly, Im liaising with colleagues at CERN, they kindly are running an analysis of the image using an advanced scanner they bought from a Geneva branch of PC world
I've been through every British (known) venue since 1974 and found convincing images of the various buildings, and I cannot find a single candidate. Ipswich and Guildford are the two closest, and I cannot find an image or any references to the Cork hall at all.
One thing that occurred to me: Could this be an Australian venue? I know the weather doesn't look like it, but one of my house-mates spent a year in Melbourne and reckoned that the building looked familiar.