Gas lighting was introduced to the building, which extended the business hours for the market. Installations to the market hall included a clock crafted by William Potts and Sons of Leeds consisting of figures of Guy, Earl of Warwick, the Countess, a retainer and a Saracen. It was moved from the Imperial Arcade at Dale End to the market hall in 1936; however, this was destroyed, along with the rest of the Market Hall, on 25 August 1940 by an incendiary attack.