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Britain faces ‘moment of consequence’ as threats from adversaries mount, spy chief says

By Thomson Reuters May 26, 2026 | 6:03 PM

LONDON, May 27 (Reuters) – Britain is at a “moment of consequence” amid increasingly brazen behaviour from adversaries and a narrowing window to stay ahead in the ​race to harness technology along with its ‌allies, a British spy chief will say on Wednesday.

Delivering the first annual lecture for her GCHQ organisation, Anne Keast-Butler will warn that the world is in a “new era of radical uncertainty, contested geopolitics ‌and ​rapidly changing technology,” her office said.

“The ⁠risk of miscalculation is ⁠as high as I’ve ever seen it,” she will say, according to extracts of her speech.

GCHQ, whose role includes eavesdropping on communications and providing national cybersecurity, ​is one of the three arms of British intelligence, which have for years been warning about the threats posed ⁠by Russia and China.

Last month, ⁠the head of the National Cyber Security ​Centre, which is part of GCHQ, warned that Britain should ​brace for a rise in cyberattacks linked to hostile ‌states.

In her speech at Bletchley Park, the secret home of Britain’s codebreakers in World War Two, Keast-Butler will say Russia is “scaling up its daily hybrid activity against the ⁠UK and Europe” and “relentlessly targeting critical infrastructure, democratic processes, supply chains and public trust.”

She will also highlight her agency’s role ⁠in “disrupting Russia’s efforts ‌to smuggle Western tech, fending off cyber ⁠attacks, and countering reckless sabotage and assassination ​attempts,” ‌according to the speech extracts.

With the speed ​of technological ⁠change, such as the advancements in artificial intelligence, the “ground beneath our feet is shifting” and Britain and its allies face a challenge to stay ahead of the competition, not least from China, she will add.

(Reporting by Michael HoldenEditing ​by Tomasz Janowski)