 Complete the following phrase:  On 13 April 2015, Aviva completed the 5.6 billion all share takeover of Friends Life Group. Andy Briggs, current group chief executive of Friends Life, became CEO of Aviva UK Life, with Mark Wilson continuing as CEO of the enlarged Aviva Group. In July 2016, Aviva froze withdrawals from the Aviva Investors Property Trust because of a lack of liquidity after 