HMRC awards UK firm Quantexa a GBP175 million, ten-year sovereign AI contract

Britain's tax authority HMRC signed a ten-year, GBP175 million deal with London based Quantexa to build a sovereign, governed AI and data platform for fraud detection and the tax gap, keeping data and processing inside HMRC's own environment.

Verified Quantexa press release, 14 May 2026

What it does not test. Does not establish that this contract displaces or reduces HMRC's existing contracts with foreign vendors such as Palantir.

How this item counts. Towards autonomy: it changes who owns, who operates, whose law governs. Binding 2 of 3 (agreed or funded), scale 2 of 3 (medium), Verified counts in full: weight +12 of 36 possible. own/operate/law: UK's Quantexa builds in-house sovereign AI platform for HMRC, GBP175M/10yr contract signed. European Sovereignty Index

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