The US Internal Revenue Service (IRS) has released the text of the US-UK Competent Authority Agreement defining the term "first notification" as used in Art. 26 (Mutual agreement procedure) of the 2001 US-UK income tax treaty. The text of the agreement was released in IRS Announcement 2007-107 dated 13 November 2007.
Treaty between United Kingdom and United States – Mutual agreement on definition of "first notification"
The competent authorities of the United States…