Boris Johnson said he wanted to “change the country for the better” after he became the UK’s new Prime Pinister.Speaking outside No 10, he said Brexit would happen on 31 October “no ifs, no buts”, adding “the buck stops here”. Johnson is making sweeping changes to his top team. More than half the cabinet, including leadership rival Jeremy Hunt, have quit or been sacked. Another prominent Brexiteer, International Trade Secretary Liam Fox, was also ousted, along with Business Secretary Greg Clark – a vocal opponent of a no-deal Brexit.Education Secretary Damian Hinds, Northern Ireland Secretary Karen Bradley, Immigration Minister Caroline Nokes, Culture Secretary Jeremy Wright and Communities Secretary James Brokenshire have also gone, along with Chris Grayling, whose record as Transport Secretary was much criticised. (Courtesy BBC) “The doubters, the doomsters, the gloomsters” who said it could not be done were “wrong”, the new PM added. Announcing his departure, the foreign secretary said he had been offered an alternative role but had turned it down.Defence Secretary Penny Mordaunt, a leading Brexiteer who is popular across the party, was one of the more surprising of the 16 departures so far.