If your intelligence gathering is compromised then the enemy knows exactly everything they need to know for whatever their strategic objectives are. Look at the case of Kim Philby in our not too distant past as a prime example.
The UK is completely compromised on every level and no longer has credible National Security.
Wait and see when the next attack happens and just like with all other attacks and with the case of 'Jihadi John' MI5/MI6 fingerprints will be all over it.
MI5/MI6 from what I can see no longer works in the interests of Britain's National Security.
All it takes is one or two bad apples and all intelligence is open to whoever wants it.
Like with the case of Rifkind who was over-seeing British intelligence caught selling his soul for money to a completely bogus Chinese company. He even tried unsuccessfully to talk his way out of the situation rather than admitting his error of judgement and standing down from his highly important role. That is called contempt and is the attitude much of the political class have for society in general.
The only question that lingers is; if he was so blatant with his thirst for money in the instance caught on camera then God only knows what has gone on behind people's backs not on camera with a much higher price tag on offer.
The political class protect their own though so they just stick their heads back in the sand and ignore the real implications of Rifkind's treachery because it does not directly affect their lives. "He's a good ol'boy easy mistake" even though he sits over-seeing British intelligence and used his 'security' profile to boost his credentials for the money being offered which included his boast of sitting on a committee for Britain's Nuclear deterrent.
May God help the future of this Country...