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The Latest Breaking News from MI5

Breaking 3 publishers covering this story in the last 6 hours

1h ago Ministers must be honest about Russian threat to UK, says former Foreign Office head
3h ago Ex-national security adviser issues warning amid fraying US-Ukraine relationship
3h ago Former security chief warns UK public of deadly Russian threat amid strained US-Ukraine relationship

MI5 chief piles pressure on Keir Starmer over spy crisis

MI5 chief expresses 'frustration' at failure to prosecute two men accused of passing intelligence from parliament to Beijing as he reveals UK faces 'daily' national security threats from China

The Independent UK · Oct 16, 2025

MI5 looking at potential risk from out-of-control AI

Security Service director general Sir Ken McCallum said the potential risk from artificial intelligence could not be ignored.

Evening Standard · Oct 16, 2025

MI5 boss says Chinese spies pose threat to UK ‘every day’

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The Independent UK · Oct 16, 2025

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MI5 fought another China spy threat in past week, agency boss says

Sir Ken McCallum also said he was ‘frustrated’ by the collapse of the Westminster spying trial

Evening Standard · Oct 16, 2025

MI5 chief says Chinese spies pose threat to UK national security ‘every day’

Sir Ken McCallum said the UK had to ‘defend itself resolutely’ against Chinese threats but acknowledged the advantages of having ties with Beijing.

The Independent UK · Oct 16, 2025

MI5 faces ‘new era’ tackling terrorism and rise in state threats

Security Service chief Sir Ken McCallum said the ‘more hostile world’ had forced the biggest shift in MI5’s mission since September 11 2001.

Evening Standard · Oct 16, 2025

MI5 chief ‘frustrated’ at failure to put men accused of spying for China on trial

Ken McCallum, the domestic spy chief, says he will ‘never back off’ from confronting threats from Beijing

The Guardian - UK · Oct 16, 2025

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Slow Horses season 5 episode 4 delivers a classic British spy showdown, with shoes off

Slow Horses season 5 episode 4 sees James Callis’ MI5 boss Claude Whelan have a rare victory.

TechRadar · Oct 15, 2025

UK spy agency warns politicians: 'You are a potential target'

The Chinese are spying on, or trying to recruit government workers, MI5 warned.

TechRadar · Oct 15, 2025

Whistleblowing ex-police spy has become ‘an inconvenient truth’

Peter Francis cannot apologise for telling the truth about undercover police tactics, his lawyer has told a public inquiry.

Evening Standard · Oct 14, 2025

UK's MI5 warns lawmakers of spying threat from China, Russia and Iran

The intelligence agency warned MPs and their staff to look out for spies trying to elicit information from them by blackmail or phishing attacks.

Euronews · Oct 14, 2025

MI5 tells politicians: ‘You are a potential target’

MI5’s National Protective Security Authority issued the warning to MPs, peers, councillors, candidates and parliamentary staff.

Evening Standard · Oct 13, 2025

The story behind the spy stories: show reveals secrets of John le Carré’s craft

How author researched his plots and letters from Alec Guinness feature in Oxford exhibition

The Guardian - UK · Oct 12, 2025

Why has the UK dropped its trial of two alleged China spies?

Prosecutor hinted at lack of backing from Downing Street but legal experts argue prosecution was still possible

The Guardian - UK · Oct 8, 2025

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Evening Standard · Oct 7, 2025

Sir Gary Oldman says Slow Horses has been one of the most ‘joyful’ experiences

The Oscar-winning actor stars as veteran MI5 agent Jackson Lamb in the Apple TV show based on the Slough House book series by Mick Herron.

The Independent UK · Oct 3, 2025

Why Slow Horses is the best spy show on TV

If Slow Horses isn’t already your latest TV obsession, it soon will be. With Season five of the hit Apple TV+ drama rolling out weekly, Jackson Lamb and his band of MI5 misfits return to prove that espionage is about far more than martinis and tuxedos.

The Guardian - UK · Oct 2, 2025

MI5 and counter-terror police on heightened alert after synagogue attack

Policing at Jewish places of worship to increase as officials investigate killer’s motivations and ties to others

We Got This Covered · Sep 29, 2025

‘We’re already at war’: Ex-MI5 chief warns Putin is already fighting countries

Putin has been starting a war, hoping we don't figure it out.

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Evening Standard · Sep 29, 2025

Blue Lights season three: what has happened in the series so far?

From foiling crime to bringing down drug dealers, the team at Blackthorn station have their hands full

The Independent UK · Sep 29, 2025

Former MI5 boss warns aid cuts risk UK’s influence on world stage

Baroness Manningham-Buller says the cuts will allow China to ‘move in’ and lessen Britain’s diplomatic power

International Business Times UK · Sep 29, 2025

MI5 Ex-Boss Warns UK May Already Be at Hybrid War with Russia – Cyber Sabotage Signals Escalation Alert

Former MI5 chief Baroness Eliza Manningham-Buller has warned that Britain may already be at war with Russia through hybrid tactics, such as cyber attacks, espionage, and sabotage, urging stronger defences amid rising threats in 2025.

The Independent UK · Sep 29, 2025

Britain might already be at war with Russia, ex-MI5 chief warns

Ex-MI5 boss points to rising number of cyber attacks as well as sabotage and covert operations on UK soil

The Guardian - UK · Sep 29, 2025

Britain may already be at war with Russia, former head of MI5 says

Eliza Manningham-Buller points to extent of cyber-attacks and other hostile activity orchestrated by Moscow

Evening Standard · Sep 24, 2025

PSNI’s use of covert surveillance on journalists ‘not systemic’, review finds

But the McCullough Review has identified more than 20 attempts made by the police service to identify journalists’ sources.

The Independent UK · Sep 23, 2025

Slow Horses is about to return for series 6 – here’s where to watch it

There’s not long to wait until the BAFTA-winning series is back on our screens

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