Original sentence: An important recent change in constitutional law came about with the Fixed-term Parliaments Act 2011, which signifcantly altered the way in which parliament can be dissolved.Then, following a referendum on EU membership in 2016 that resulted in 52.89 per cent of people favouring to leave, the United Kingdom ceased to be a member of the European Union on 31 January 2020
Edited sentence: After 2015, however, early elections were held anyway in 2017, following a referendum on EU membership that resulted in 52.89 per cent of people favouring to leave but without any clear plan, and 48.1 per cent of voters favouring to remain.Since a financial crisis of 2007–2008 brought about by bankers' speculation, a Conservative and Liberal Democrat coalition launched a programme of "austerity" cuts, and cemented their term in the Fixed-term Parliaments Act 2011.Since then, the UK has been unable to decide what to do