Prime Minister Sir Keir Starmer has said a 'cool head' is needed after Donald Trump's tariffs sent stock markets tumbling across the globe.Jonathan Reynolds is due to address MPs on Thursday morning after Mr Trump confirmed sweeping import levies on countries across the world, hailing America's "declaration of economic independence".

Prime Minister Sir Keir Starmer has said a 'cool head' is needed after Donald Trump's tariffs sent stock markets tumbling across the globe.Jonathan Reynolds is due to address MPs on Thursday morning after Mr Trump confirmed sweeping import levies on countries across the world, hailing America's "declaration of economic independence".