I used to pop into SoS bar adjacent to Fabric on a Sunday morning for brunch. Somewhere I have a video of my cutlery being vibrated across the table by the bass from Fabric, so I guess they were still hard at play at 11am...

Smithfields used to be where the discerning drinker went to get a very late (or very early) pint in the local pubs as they had special licenses to cater to the market workers coming off shift. By the time I lived in the city the late licensing rules had been relaxed though.