Reader Q&A: ask Rafael Behr your questions now

It's 10 years since Brexit - and it's also another one of those weeks in British politics ... Guardian columnist Rafael Behr will be here at 5pm to answer your questions about Burnham, Starmer, Brexit and more.

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Welcome to our latest Q&A with a Guardian journalist. Raf will be joining us at 5pm. We have originally asked him to take questions about Brexit as we mark 10 years since the UK's vote to leave the EU. But ... you may well have questions about the last 48 hours as Andy Burnham looks certain to become the next prime minister.

In the meantime, though, Andrew Sparrow is covering another busy and dramatic day in Westminster on the politics live blog and here's some more on the end of Keir Starmer's premiership: