Complex sentence: He was appointed as Secretary of State for Work and Pensions by Prime Minister Theresa May in July 2016, but following the 2017 General election moved to become First Secretary of State, Minister for the Cabinet Office and Paymaster General.
Split into simpler sentences: He was appointed as Secretary of State for Work and Pensions by Prime Minister Theresa May in July 2016. Following the 2017 General election he was promoted to First Secretary of State, Minister for the Cabinet Office and Paymaster General.