This is going to be another part of the realignment of US-British relations, and cleansing the bad socialist apples from both nation’s intel agencies is a top priority - along with our diplomacy folks.
It’s hard to purge spooks because they know where all the bodies are buried, and they do seem to be revenge-motivated.
For this reason Trump is the perfect man for the job. Even a year ago no one was taking him seriously. I seriously doubt they ever bothered to compose a real dossier on him.