U.K. considers blocking stock listings on national security grounds

<p>From the BBC World Service: Companies could be blocked from listing on the London Stock Exchange on national security grounds, under new rules being considered by the U.K. Treasury.</p> <p>Your support powers nonprofit news — become a Marketplace Investor before Thursday to help us reach our fundraising goal: <a href="https://support.marketplace.org/mkp-mmr-sn">marketplace.org/givemorning</a></p>