LONDON (Reuters) – Britain and Canada launched talks on a new free trade deal on Thursday, as Britain’s trade minister visited her Canadian counterpart to try to deepen ties already worth $25 billion. Britain said the talks would aim to build on a trade continuity agreement with Canada, which rolled over EU trade arrangements before Britain left the bloc’s trading sphere at the end of 2020. “There is huge potential to strengthen and grow trade between our two countries,” British trade minister Anne-Marie Trevelyan said in a statement. “We want a new deal for the 21st century — one that will b…