to Ireland in 2016 (see above), Apple completed a much larger transaction in Q1 2015, that remained unknown until January 2018. In July 2018, Irish newspaper The Sunday Business Post reported that Microsoft was planning a similar IP–based quasi–inversion to Ireland, as Apple executed in 2015. UK inversions Ireland's largest law firm, Authur Cox, records the move of Experian plc to Ireland in 2006, as the first UK corporate tax inversion to Ireland. Experian was formed in 2006 from the de-merger of UK conglomerate GUS plc, but most of Experian's business was U.S. based (e.g. it had a limited connection to the UK). Between 2007 and 2009, several UK multinationals "re-domiciled" to Ireland: WPP plc, United Business Media plc, Henderson Group plc, Shire plc and Charter (Engineering) plc. Unlike the U.S. tax code, the UK tax-code did not require the inversion to be executed by way of an acquisition of an Irish–based corporate who was at least 20% of the merged group. However, in 2009, the UK Labour government switched to a "territorial tax" system, and over 2009 to 2012, the UK Conservative government introduced a number of other corporate tax reforms including reduction of the UK headline CT rate to 20%, creation of new BEPS tools (e.g. a patent box), and re-structure of "controlled foreign corporation" (CFC) rules. By 2014, the UK HMRC reported that most of the UK multinationals that had inverted to Ireland had either returned to the UK (e.g., WPP plc, United Business Media plc, Henderson plc), or were about to be acquired by U.S. multinationals as part of a U.S. tax inversion (e.g. Shire plc). The UK corporate tax reforms not only reversed many of Irish tax inversions but in 2014, The Wall Street Journal reported that "In U.S. tax inversion Deals, U.K. is now a winner". , the UK had received the 3rd–largest number of U.S. corporate tax inversions in history, only ranking behind Ireland and Bermuda in popularity (see above). , there have been no further UK corporate tax inversions to Ireland since the 2009–2012 rule changes by the Labour, and the Conservative governments. Other inversions Ireland's largest law firm, Authur Cox, records the move of Pentair to Ireland in 2014, as the first Swiss corporate tax inversion to Ireland. However, Pentair was a U.S.–controlled firm that had previously inverted to Switzerland, and moved to Ireland (without a corporate acquisition), in 2014 to