London Pollution: Unhealthy Air in the Tube; Next General Election Is Not a ‘Done Deal’: PM

While London Mayor Sadiq Khan focuses on car emissions, air pollution on the Underground is at far higher levels. The prime minister says that the next general election is not a “done deal” after the Tories lost two previously safe seats in by-elections. The Conservatives managed to cling onto Boris Johnson’s old seat in Uxbridge. Labour says they lost because of the London mayor’s Ultra Low Emission Zone expansion. An expert provides some tips on how to keep cool during a heat wave as the summer getaways start.