However, the rooms were accessed via a connecting door from the Assembly Rooms' ballroom, and it was only later, when the construction of Lendal Bridge required the widening of the road, that a new frontage was created on what would become Museum Street.

Source: https://www.yorkpress.co.uk/news/23687472.yorks-hidden-history-festival-concert-rooms-now-car-park/?ref=rss

The city still had the Assembly Rooms which had a wide variety of celebrities visit, as well as regular tea dances and even a war games convention in 1988.

Source: https://www.derbytelegraph.co.uk/news/derby-news/gallery/17-amazing-photos-derby-1980s-8830370

The Irish Centre at The Wellington Assembly Rooms.

Source: https://www.liverpoolecho.co.uk/news/liverpool-news/gallery/citys-once-grand-ballroom-iconic-27493438

The restored Crescent Assembly Rooms will be open on Sunday, September 10, and Friday, September 15, 10.30am to 4pm, and the Pavilion Gardens Octagon Hall on Monday, September 11, 9.30am to 4.30pm.

Source: https://www.buxtonadvertiser.co.uk/heritage-and-retro/heritage/buxton-venues-ready-for-heritage-open-days-event-season-starting-next-week-4273843