Critics including MPs and campaigners raise concerns about a deal between the UK’s financial watchdog, the Financial Conduct Authority (FCA), and Palantir. They warn that sensitive financial and personal data used for FCA crime-detection purposes could become subject to disclosure under US legal requirements that can compel companies to provide information to US authorities. One warning cited by campaigners centres on a US law that may apply to Palantir, which could require the company to disclose information to the Trump administration, potentially creating “backdoor” access to data held or processed as part of the FCA arrangement. Martin Wrigley, an MP and a member of the House of Commons science and technology select committee, is among those urging the FCA to demonstrate safeguards that prevent sensitive citizen and commercial information from being disclosed to US authorities. The sources describe the dispute as focused on whether contractual and technical protections are sufficient to ensure the FCA’s relationship with Palantir does not expose UK financial data to US disclosure obligations, particularly if such laws are triggered. The FCA and Palantir have not been detailed in the provided accounts regarding their specific assurances or compliance approach.