British Prime Minister Sir Keir Starmer vowed on Friday to stay in office to "deliver change" after his Labour Party suffered heavy losses in English local elections and parliamentary votes in Scotland and Wales, deepening doubts over his ability to govern. Just under two years after winning a landslide national election, Starmer saw voters punish his Labour government, with support evaporating even in its traditional strongholds in London, former industrial regions in central and northern England, and in Wales. The main beneficiary was the populist Reform UK party of Brexit campaigner Nigel Farage, which gained more than 1000 council seats in England, and will likely form the main opposition in Scotland and Wales to the pro-independence Scottish National Party and Plaid Cymru.…