Three experts on the next steps for Boris Johnson, Britain and the EU, after a big win for the sitting British prime minister in national elections. Ed Butler speaks to Jill Rutter from the research group UK in a Changing Europe, Sir Andrew Cahn, former head of UK Trade & Investment - a UK government department, and Rebecca Christie, visiting fellow at the Bruegel Institute in Brussels. (Photo: Boris Johnson after his election victory, Credit: Getty Images)