Constitutionally, the UK is a de jure unitary state, its parliament and government in Westminster. In the House of Commons – the lower house of the UK parliament – Wales is represented by 40 MPs (out of 650) from Welsh constituencies. At the 2017 general election, 28 Labour and Labour Co-op MPs were elected, eight Conservative MPs and four Plaid Cymru MPs. The Wales Office is a department of the United Kingdom government responsible for Wales, whose minister the Secretary of State for Wales sits in the UK cabinet. Alun Cairns has been Secretary of State for Wales since March 2016.