Ahrends Burton and Koralek has revised its design to extend the Whitworth Art Gallery in Manchester. The scheme involves two major extensions. The first (pictured), is on the south-west wing and will include a visitor centre, lecture theatre, cafe and visitor room. The second, on the north-west, will be a service area for picture storage, staff quarters and deliveries. The project - which is dependent on a major grant from the Heritage Lottery Fund - includes plans to refurbish the existing gallery space and relandscape the grounds.