easyJet's pending sale to U.S. investment group Castlelake reinforces concerns around London's "shrinking role as a home for publicly traded businesses," Wealth Club's Susannah Streeter writes. The airline accepted in principle a $7 billion offer that would take the company private, following a slew of U.K. companies delisting as a result of takeovers. International investors are wagering that London-listed stocks trade at a discount, underlining the valuation gap between U.K. stocks and their international peers, Streeter writes. "The loss of another established public company would be another blow to the depth and diversity of the U.K. stock market," she adds. EasyJet shares rise 9.6% in afternoon European trade. (josephmichael.stonor@wsj.com)