The protocol, signed 26 June 2007, to the income tax treaty between Switzerland and the UK, signed on 8 December 1977, entered into force on 22 December 2008. The protocol generally applies for Switzerland from 1 January 2009, for the UK from 1 April 2009 for corporate taxes and from 6 April 2009 for income taxes. Claims for tax credits related to dividend distributions of UK corporations are appl…