Britain's stock markets toppled on Wednesday, as more stimulus measures by policymakers to support global growth failed to quell worries about the economic fallout of the coronavirus pandemic, Reuters reported. The blue-chip FTSE 100 fell 3.5% by 0816 GMT, with miners, oil & gas companies and life insurers leading declines. IT company Micro Focus International slumped 9.4% as it scrapped final dividend as part of its plan to brace for the fall out of the pandemic. UK shares closed higher on Tuesday.