There have been a number of minor alterations to the building since its opening, including changing of the ground floor retail area into a cafe, and addition of more windows around its entrance. In 2006, Floor 4 of the gallery was transformed from a restaurant area into a new gallery space. The gallery space with 8m high ceiling has enabled the Gallery to present a further programme of exhibitions, in addition to its main temporary exhibition galleries. This has included exhibitions by regional and internationally renowned artists including David Batchelor, Richard Billingham and Leo Fitzmaurice.