Warren, Idriel, thank you for your welcome!
So, as regards Mary Tudor, she was a Queen Regnant, the first such case in England (if we are to exclude Empress Mathilda, and we'd better do it), since 1553. On 25 July 1554 she married Prince Philip of Spain at Winchester Cathedral, and they took a joint style 'Philip and Mary, by the Grace of God, King and Queen of England, France and Naples, Jerusalem and Ireland, Defenders of the Faith, Princes of Spain and Sicily, Archdukes of Austria, Dukes of Milan, Burgundy and Brabant, Counts of Habsburg, Flanders and Tyrol'.
In 1556 Philip ascended the throne of Spain, and the style changed to 'Philip and Mary, by the Grace of God, King and Queen of England, Spain, France, Jerusalem, both the Sicilies and Ireland, Defenders of the Faith, Archdukes of Austria, Dukes of Burgungy, Milan and Brabant, Counts of Habsburg, Flanders and Tyrol'.
The Parliament was called under their joint authority, the Acts of Parlament were dated with both royal names, and the coins were minted with two faces. However, Philip's role in government was extremely limited, his case was a unique instance of 'Crown matrimonial' going to a male person. Unlike William and Mary, the joint sovereignty of Philip and Mary was never established by an Act of Parliament, and Philip lost his English title when Mary died in 1558.
By the way, Scotland also had a King Consort—Lord Darnley was elevated to the kingship on marrying Mary, Queen of Scots in 1565.