While Queen may refer to both Queen regnant (sovereign) or Queen consort, the King has always been the sovereign. There are historical reasons for this hierarchy --in a long line of English monarchsin a long line of English monarchs you will find more Kings than you would find Queens. In fact, if you do not recognize Matilda'sMatilda's and Lady Jane'sLady Jane's claim to the throne of England then Queen Mary I of EnglandQueen Mary I of England becomes the first female sovereign of England --and and that happened in 1553, when the institution was already about 800 years old (recognzingrecognizing kings before 1066).
This [long absence of a female sovereign] obviously led to the general belief that the King was the highest authority in England (hence a Kingdom and not a Queendom). And since historically Kings had declared their wives as Queens, the Queen had come to signify a lower rank in the hierarchy. Thus, Queens never bestowed the generous title of King on their husbands.
There are two exceptions of which I am aware:
- Queen Mary IQueen Mary I's husband was King Philip II of SpainKing Philip II of Spain, who was also referred to in the court as the King of England (Jure UxorisJure Uxoris). In theory he was the joint sovereign with Mary.
- Queen Mary IIQueen Mary II and her husband (and cousin) King William IIIKing William III reigned jointly. But in this case, both had a claim to the throne (an act of Parliament following the Glorious RevolutionGlorious Revolution).