In March 2012 the Architectural Conservation Laboratory (ACLab) of the University of Hong Kong (Architectural Conservation Programmes (ACP) at the Faculty of Architecture), was invited to tender for this major paint sampling project via the Conservation Architects (Purcell) as part of the Central Police Station Revitalisation Project . For the analysis of architectural finishes at the CPS more than 400 samples of paint finishes from the exteriors and interiors of the various buildings were collected. The Architectural Conservation Laboratory invited Dr. Donald Ellsmore, who’s business in Australia is specialising in conservation analyses, planning and management, materials and finishes analyses to collaborate in the project . Dr. Ellsmore and I, assisted by Master students of the ACP Programmes worked intensely on site and in the laboratory and first results where presented after completion of the main stage of the project May-July 2012. The samples were processed to produce cross-sections in order to reveal, document and compare the decorative history of the buildings.