Treaty Series No. 12 (2017) Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the United States of America to Improve International Tax Compliance and to Implement FATCA. London 12 September 2012. Exchange of Notes between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the United States of America updating and amending the Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the United States of America to Improve International Tax Compliance and to Implement FATCA done at London on 12 September 2012. Washington 3 and 7 June 2013
Command Paper, CM 9428