Lloyds Banking Group Plc is buying British fintech firm Curve as part of a push to widen its digital offerings and take on challenger banks such as Revolut Ltd.The lender said in a statementBloomberg Terminal Wednesday that the acquisition would help Lloyds to offer customers an “enhanced payments experience within mobile banking.” While no terms were disclosed for the deal, Sky News previously reported Lloyds would pay £120 million ($158 million) for the fintech....