Most Wednesdays when Parliament is sitting, Jeremy Corbyn does battle with Theresa May at Prime Minister’s Questions.
The Labour leader gets six questions on topics of his choosing.
The prime minister, who also faces questions from backbench MPs and the SNP’s leader at Westminster, has no idea what Mr Corbyn is going to quiz her about, although she comes prepared for most eventualities.
The Labour leader stepped up his Brexit questioning towards the end of 2017 and into 2018, according to BBC analysis, as the government ran into more trouble over its strategy for leaving the EU.
Mr Corbyn has spent a lot of his political life campaigning on issues around foreign affairs. In 2018, he only raised non-Brexit international affairs twice, when he criticised the British government’s relationship with Saudi Arabia.
The Windrush scandal – over the treatment of British citizens of Commonwealth descent – dominated PMQs for two weeks, leading up to the resignation of the then-Home Secretary Amber Rudd at the end of April.
How long does PMQs last?
It is allocated a 30-minute slot in the House of Commons every Wednesday, but Speaker John Bercow routinely allows it to over-run to allow more backbenchers to get questions in to the PM.
Last year’s sessions lasted an average of 45 minutes.
On 13 June, MPs asked the prime minister questions for over 54 minutes.
This was largely due to the expulsion of Ian Blackford – Westminster leader of the Scottish National Party – after he refused to sit down, having asked that the House of Commons “sit in private”.