Scheme approved. Extension and refurbishment in association with an education and training facility and office use (sui generis) of the Treasury Building, works comprising; i) Mansard roof extension at fourth floor, with dormer windows on front, rear, west and east elevation and a glazed rooflight; ii) Installation of a rooftop plant area; iii) Reconstruction of the hall roof resulting in an increased ridge height; iv) Insertion of dormer windows in the hall roof; v) Extension at the north east corner to create a new lift shaft; vi) A new brick clad escape stair on the north side between the Treasury building and the Hall; vii) Creation of new chimney stacks and associated internal and external alterations and cycle parking.