Researcher arrested amid claims he was spying for China.

Chief political correspondent Henry Zeffman helps Laura and James Cook understand what information Westminster staffers get access to, as well as the UK government’s reaction to the news.

And, the case of escaped prisoner Daniel Khalife has put prisons at the top of the political agenda. Laura’s interviewed the justice secretary Alex Chalk. We reflect on his comments and on the question of how important prisons are to politicians and the electorate.

Newscast was hosted by Laura Kuenssberg and James Cook with Henry Zeffman. It was made by Chris Flynn with Miranda Slade. The technical producer was Dafydd Evans. The senior news editors are Jonathan Aspinwall and Sam Bonham.