I expect you will be working with my beloved, who is a detective. Her competence warrants civility, at the very least. If need be, I will ensure that she receives it.

I do not say this as a threat. You speak poorly of members of your Scotland Yard, and I do not know them, or you, well enough to know if they deserve your disdain. Thus I do not know if you will extend such discourtesy to my beloved, but if you find yourself of the opinion to besmirch her practice, recall that she has allies in her defense.