The U.K.’s National Health Service (NHS) is investigating whether Palantir Technologies Inc. (NYSE: PLTR) breached contract terms just a week after securing a controversial deal. Palantir, tasked with developing a patient data platform, initiated an influencer marketing campaign to combat criticism of its work, potentially violating the contract’s terms. The campaign, handled by Topham Guerin, aimed to address data privacy concerns but was not cleared with NHS England, violating the contract that mandates prior written consent for any marketing activities, reported Bloomberg. Also Read:Cathie …