By Huw Jones LONDON (Reuters) -British financial regulators will have to promote the global competitiveness of the country’s financial sector, though a plan for more government oversight of their work has been put on hold for now, finance minister Nadhim Zahawi said on Tuesday. Zahawi confirmed that a long-awaited financial services and markets bill would be introduced before parliament on Wednesday to “capitalise on the benefits of Brexit and transform the UK financial services sector”. Bankers have been calling for speedy reforms to bolster London’s attractiveness as a global centre for fina…