A national emergency is declared as the UK faces a record-breaking heatwave. The Sunday Times health editor Shaun Lintern and rail expert Anna-Jane Hunter assess how the NHS and railways will cope if temperatures reach 40C next week.And Adam discusses the US Capitol riot hearings with the BBC’s Anthony Zurcher and Alex Holder, director of Unprecedented. The documentary about President Trump has been used as evidence by the House of Representatives committee investigating what happened that day. This episode of Newscast was made by Tim Walklate, with Phil Marzouk and Miranda Slade. The technical producer was Emma Crowe. The assistant editor was Alison Gee.