As the hub of local politics, the third floor is dominated by the Council Chamber, where the 55 Councillors attend full council meetings at least 10 times a year, and is chaired by the Lord Mayor. The seating is arranged in a semi circle, so that no-one is more than 26 feet from the Lord Mayor. High above his dais is an eye catching panel bearing two Latin inscriptions. They proclaim "Laws are made for the welfare of the citizens and the city" and "it is the highest justice to give each man his due".

The acoustics in the Chamber are aided by fabric covered seaweed panels on the walls which date back to the 1930s. The original 1930s light switches, which twist rather than flick on, are also still in use.