Retrieved from https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/652285/Joint_Ministerial_Committee_communique.pdf [accessed 11 April 2019]In November 2017, the Institute for Government stated in its paper Brexit, Devolution and Common Frameworks that "In principle there are at least four ways that common policy frameworks could be established. In many cases, a combination of these approaches may be needed."2Institute for Government. (2017, November 22).