A bipartisan group of UK politicians is sounding the alarm over the country's partnership with the data analytics company Palantir.

In a report published Tuesday, the 11 members of Parliament’s Science, Innovation, and Technology Committee warned that the country’s ballooning reliance on Palantir’s technology “represents an unacceptable point of weakness” that could hand the company overwhelming bargaining power in future negotiations.

“We know that with vendor lock-in, over time, we’ll get more expensive and worse services,” Dame Chi Onwurah, chair of the committee and member of Parliament, tells WIRED. “It’s a trap that has to be avoided.”

In a worst-case scenario, a deeply entrenched supplier could threaten to withhold service as a way of imposing its will, Onwurah believes. “That could bring public services and our economy to a halt,” she says. “That’s a huge risk.”

Though the committee says that its objections to Palantir are not ideologically motivated, the report also describes a “clear mismatch with UK values.” It points to politically charged comments by Palantir cofounder Peter Thiel—who in 2023 described the British public’s affection for the NHS as “Stockholm syndrome”—and a 22-point manifesto based on a recent book by CEO Alex Karp, which advocates for an overriding fealty to the US and its interests.

“We have a key vendor saying they will exercise technology in accordance with their political mission,” Onwurah says. “If what the UK is trying to do in our NHS or our defense does not align with Palantir’s political objectives, we clearly can’t de...