What's the difference between MI5 and MI6? What happened to MI1 - MI4 and are there agencies with higher numbers (MI7, MI8, etc.)?

I believe the difference is like the FBI and CIA in the USA - one is for domestic intelligence and one is for international intelligence. But I'm not sure which one is which. I also think that some of ...
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MI6 launches secretive dark web spy recruitment tool

MI6 has launched a new recruitment drive for spies – using the dark web. The UK’s intelligence agency has set up a new secure messaging platform which will make it easier for spies to submit ...
UPI

New chief of Britain's MI6 warns of threat from Russian hybrid warfare

Dec. 15 (UPI) --Incoming spy chief Blaise Metreweli will use her first speech as head of MI6, Britain's foreign intelligence service, to warn of the grave threat from Russia, particularly from its use ...
KPBS

MI6 gets its first female chief, years after Judi Dench played Bond's boss

LONDON — Q is becoming C. The head of technology and innovation at Britain's MI6 foreign intelligence agency — the real-life equivalent of James Bond's gadget-master Q — has been promoted to the ...
KVIA

Silent Courier: UK intelligence service MI6 launches dark web portal to recruit foreign spies

(CNN) — Britain’s foreign intelligence service, MI6, is launching a new online portal called Silent Courier, aimed at using the dark web to entice potential spies to send it secrets, particularly ...