Who controlled Britain's Polaris deterrent?

Did Britain retain control of its Polaris nuclear deterrent?

Yes; Britain controlled Polaris, although the force's primary commitment was to NATO.

Alan Glyn asks whether Britain still held ultimate control over the Polaris force despite its NATO role. Speed confirms national control but says the deterrent's primary commitment in the first instance was to the alliance. The exchange separates sovereign command authority from the operational commitment assumed in NATO planning. It also captures a recurring political concern about whether reliance on American missile technology compromised British independence. Speed's concise answer presents national control and alliance assignment as compatible rather than contradictory.