A mistaken CIA bombing inside an alliance

How would Britain react if the CIA mistakenly bombed a British diplomatic site in a counterfactual 1984?

Britain would be extremely angry, but the incident would probably be resolved diplomatically because the two countries would remain allies.

A serious diplomatic crisis would not automatically end the alliance. In the counterfactual where Britain retains greater power, a mistaken CIA bombing of a British diplomatic site would still provoke a forceful reaction. Britain and the United States would have strong reasons to contain the damage because they remain allies. Their shared strategic interests would push even a humiliating incident toward diplomatic resolution.