Not just the UK, I’ll bet. I’d also be looking at Canada, Italy, Germany, and France...
Actually, I think it was mainly the Brits who were involved in this. They have a long tradition of left-wing infiltration (or outright membership in) their security services. Think Kim Philby and the gang.
It made the paper that the head of British Intelligence resigned once the scandal was revealed.
So basically we had the MSM-Democrats colluding with left-wing governments in other countries to prevent Americans from getting the president they wanted.