exposure to asbestos, on the grounds that although it is in itself asymptomatic, it is linked to development of diffuse pleural thickening, which causes lung impairment. It has been highly contentious, however, as to the probability of pleural plaques developing into pleural thickening or other asbestos-related illnesses. On October 17, 2007, this point was clarified by the Law Lords' ruling that workers who have pleural plaques as a result of asbestos exposure will no longer be able to seek compensation as it does not in itself constitute a disease. This ruling was, however, superseded, so far as sufferers of pleural plaques in Scotland are concerned, by the passing of the Damages (Asbestos-related Conditions)(Scotland) Act 2009, which provides that in Scots law pleural plaques are to be considered an actionable type of personal injury. Control of Asbestos Regulations The Control of Asbestos Regulations were introduced in the UK in November 2006 and were an amalgamation of three previous sets of legislation (Asbestos Prohibition, Asbestos Licensing and the Control of Asbestos at Work Regulations) aimed at minimising the use and disturbance of asbestos containing materials within British workplaces. Essentially this legislation bans the import and use of most asbestos products and sets out guidelines on how best to manage those currently in situ. The Control of Asbestos Regulations were amended and the revised regulations came into force on 6 April 2012 to take account of the European Commission's view that the UK had not fully implemented the EU Directive on exposure to asbestos (Directive 2009/148/EC). These changes were relatively minor and included additional requirements for non-licensed asbestos work. These changes mean that some non-licensed asbestos work now requires notification, and has additional requirements for managing this work (e.g. record keeping and health surveillance). Dutyholders of all non-domestic properties within the UK must establish an asbestos register and a management plan. The definition of "non-domestic" is "a property or structure (commercial, domestic or residential) where work is carried out" and the obligation of a "dutyholder" is to ensure that people are not exposed to any asbestos-based materials during the course of their work. The Asbestos Register states the presence or non-presence of asbestos related to the inside and outside of the structure. The exception is where the property age (post-1999 when chrysotile asbestos was banned) would indicate that such products will not have been used during the construction of the building. Regulation 4