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The Guardian - UK
The Guardian - UK
Comment
Editorial

The Guardian view on UK national security: a case of state failure

Sir Ken McCallum, delivers the annual MI5 director-general's speech at Thames House on 16 October 2025.
Sir Ken McCallum, the head of MI5, giving his annual threat update in London on Thursday. Photograph: Jonathan Brady/PA

The China spying row has revealed disturbing weaknesses in the processes of the UK state. It cannot be in the national interest for a case involving national security to get so close to the courts and then for it to be abandoned in what remain mysterious circumstances. Public confidence, as well as security itself, are inevitably placed at risk. But this genuinely important issue now risks being blanketed by the fog of the party-political battle at Westminster.

For the third time this week, MPs spent Thursday trading accusations about whether the Conservatives or Labour are more to blame for the fiasco of last month’s collapsed prosecution. To be fair, the latest exchanges did not descend to the abject “did-didn’t” level that was reached at prime minister’s questions on Wednesday. Politicians from Sir Keir Starmer down are fond of saying that the national interest comes before the party interest. But there has been too little evidence of that principle in the current dispute.

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