The head of Britain’s domestic intelligence agency says China poses a daily threat to the United Kingdom’s security.

The head of Britain's MI5 security service said on Thursday he was frustrated by the collapse of a China spying case which ...

Britain is facing an escalating threat from hostile states such as Russia, Iran, and China while the terrorism risk is "huge" ...

Sir Ken McCallum says MI5 has acted against Chinese activity in the last week as parliamentary inquiry launched into spy case ...

The United Kingdom has seen a 35% rise in the last year in the number of suspects investigated annually for possibly working ...

LONDON (AP) — British counterterrorism police arrested three men in London on Thursday on suspicion of spying for Russia.

Britain's domestic spy agency MI5 issued a rare public warning to members of parliament on Monday that they are being ...

Life imitates art, sometimes too well. The Soviet double agent Kim Philby was so impressed by the work of John le Carre that ...

MI5 has warned British MPs that spies from China, Russia, and Iran are targeting them in an effort to undermine UK democracy, ...

Sir Ken admits he's "frustrated when opportunities to prosecute national security threatening activity are not followed" - as ...

Three men in northern England were sentenced last week for preparing acts of terrorism. Their case highlights a growing ...