|At 1 April 2016||8.7|
|Currency translation differences||1.2|
|At 31 March 2017||9.0|
|Currency translation differences||(0.9)|
|At 31 March 2018||7.1|
During the year, the group reduced its investment in Muharraq Holding Company 1 Limited through a £1.0 million (2017: £0.9 million) repayment of a shareholder loan.
At 31 March 2018, the group's investments mainly comprised its investment in Muharraq Holding Company 1 Limited. These investments are held at fair value.
At 31 March 2018, the company's investments related solely to its investments in United Utilities PLC, which was recorded at a cost of £6,326.8 million (2017: £6,326.8 million).