Starling, the U.K. challenger bank that offers a mobile-only current account, continues to execute on its marketplace banking strategy. Following the required regulatory approval, the Starling Marketplace is adding a number of financial services integrations, spanning pensions, savings, travel insurance and mortgage brokerage. Specifically, Starling is partnering with PensionBee, Wealthsimple, Kasko, and Habito, respectively. It…