LONDON (Reuters) – Britain unveiled a new taskforce on Monday to write rules forcing financial firms and listed companies to publish plans from next year for transitioning to a net zero economy by 2050. Last November at the COP26 UN Climate Summit, British finance minister Rishi Sunak said companies would have to publish a plan from 2023 with targets to mitigate climate risk, interim goals between now and 2050 and measures to meet them. It is part of Britain’s commitment to make the UK the world’s first net-zero aligned financial centre. The taskforce will develop “rigorous and robust” measure…