The Soviets were financing (partly), arming and training the IRA, using Libya as their cutout and training ground. Weapons were mostly from the US because it was easier. They also got the IRA to attack the BAOR (British Army of the Rhine, the British NATO component), in Germany.
So there is good reason for the British to be a bit sour vs the Russians.
Going to see more of this down the track. The ‘enemy of my enemy’. Britain should just mind its own business. The sun has set on the British empire. It’s going to have a very large restless mad mo population by 2050. Pew suggest around 14 million by then whitey aging and dying off.