The comprehensive agreement (SI 2007/3469) between the United Kingdom and the Faroes entered into force 3 June 2008 It had effect in the United Kingdom from 1 April 2009 for corporation tax and 6 April 2009 for income tax and capital gains tax. It was effective in the Faroes from 1 January 2009.
If using the HMRC Intranet, the agreement can be viewed through the “New treaties/protocols in force” link on the sidebar. On the HMRC web-site, searching for “Faroes” will provide a link to the treaty.
The text of the Tax Treaty can be found via https://www.gov.uk/government/publications/faroes-tax-treaties