OK, I'm going to be a bit more specific about what I said regarding the sense of threat in Cameron's tweet, and I may be wrong / flamed to think like this, but history gives enough cause for suspicion.
Corbyn's ideas, if implemented, are a serious challenge to NATO and other aspects of the MIC. He is a lifelong campaigner for the likes of CND etc.
If it gets to the point where a government led by him seems disturbingly likely, and some form of attack might damage that prospect, it is not beyond imagination that such an attack may be more likely.
On the other hand, there may have been a meeting some time ago where certain people said something on lines of "Oh well, stuff like Gladio has worked pretty well up till now so let's not bother with it any more"
What I've said here may well never come to pass, or need to. Operation Mockingbird style media is the first port of call...it's been deployed long before yesterdays result.
People who theorise about conspiracies eh? What are they on about? The sort of people who think MI5 have been involved in covering up kid-fucking or that police spies shag their way through the environmentalist movement. It's absurd.