This list of kings and queens of the Kingdom of England begins with Alfred the Great, who initially ruled Wessex, one of the seven Anglo-Saxon kingdoms which later made up modern England. Alfred styled himself King of the Anglo-Saxons from about 886, and while he was not the first king to claim to rule all of the English, his rule represents the start of the first unbroken line of kings to rule the whole of England, the House of Wessex.^[44]

Arguments are made for a few different kings thought to control enough Anglo-Saxon kingdoms to be deemed the first king of England. For example, Offa of Mercia and Egbert of Wessex are sometimes described as kings of England by popular writers, but it is no longer the majority view of historians that their wide dominions are part of a process leading to a unified England. Historian Simon Keynes states, for example, that "Offa was driven by a lust for power, not a vision of English unity; and what he left was a reputation, not a legacy."^[45] This refers to a period in the late 8th century when Offa achieved a dominance over many of the kingdoms of southern England, but this did not survive his death in 796.^[46][47]

In 829 Egbert of Wessex conquered Mercia, but he soon lost control of it. It was not until the late 9th century that one kingdom, Wessex, had become the dominant Anglo-Saxon kingdom. Its king, Alfred the Great, was overlord of western Mercia and used the title King of the Angles and Saxons, but he never ruled eastern and northern England, which was then known as the Danelaw, having earlier been conquered by the Danes from Scandinavia. His son Edward the Elder conquered the eastern Danelaw, but Edward's son Æthelstan became the first king to rule the whole of England when he conquered Northumbria in 927, and he is regarded by some modern historians as the first true king of England.^[46][47] The title "King of the English" or Rex Anglorum in Latin, was first used to describe Æthelstan in one of his charters in 928.

The Principality of Wales was incorporated into the Kingdom of England under the Statute of Rhuddlan in 1284, and in 1301 King Edward I invested his eldest son, the future King Edward II, as Prince of Wales. Since that time, except for King Edward III, the eldest sons of all English monarchs have borne this title.

After the death of Queen Elizabeth I without issue, in 1603, King James VI of Scotland also became James I of England, joining the crowns of England and Scotland in personal union. By royal proclamation, James styled himself "King of Great Britain", but no such kingdom was actually created until 1707, when England and Scotland united to form the new Kingdom of Great Britain, with a single British parliament sitting at Westminster, during the reign of Queen Anne.

Alfred was king of Wessex from 871.

There is some evidence that Ælfweard of Wessex may have been king in 924, between his father Edward the Elder and his brother Æthelstan, although he was not crowned. A 12th-century list of kings gives him a reign length of four weeks, though one manuscript of the Anglo-Saxon Chronicle says he died only 16 days after his father.^[52] However, that he ruled is not accepted by all historians. Also, it is unclear whether—if Ælfweard was declared king—it was over the whole kingdom or of Wessex only. One interpretation of the ambiguous evidence is that when Edward died, Ælfweard was declared king in Wessex and Æthelstan in Mercia.^[47]

England came under the control of Sweyn Forkbeard, a Danish king, after an invasion in 1013, during which Æthelred abandoned the throne and went into exile in Normandy.

Following the death of Sweyn Forkbeard, Æthelred the Unready returned from exile and was again proclaimed king on 3 February 1014. His son succeeded him after being chosen king by the citizens of London and a part of the Witan,^[78] despite ongoing Danish efforts to wrest the crown from the West Saxons.

Following the decisive Battle of Assandun on 18 October 1016, King Edmund signed a treaty with Cnut (Canute) under which all of England except for Wessex would be controlled by Cnut.^[81] Upon Edmund's death just over a month later on 30 November, Cnut ruled the whole kingdom as its sole king for nineteen years.

After Harthacnut, there was a brief Saxon Restoration between 1042 and 1066.

After King Harold was killed at the Battle of Hastings, the Witan elected Edgar Ætheling as king, but by then the Normans controlled the country and Edgar never ruled. He submitted to King William the Conqueror.

In 1066, several rival claimants to the English throne emerged. Among them were Harold Godwinson, recognised as king by the Witenagemot after the death of Edward the Confessor, as well as Harald Hardrada, King of Norway who claimed to be the rightful heir of Harthacnut, and Duke William II of Normandy, vassal to the King of France, and first cousin once-removed of Edward the Confessor. Harald and William both invaded separately in 1066. Godwinson successfully repelled the invasion by Hardrada, but ultimately lost the throne of England in the Norman conquest of England.

After the Battle of Hastings on 14 October 1066, William the Conqueror made permanent the recent removal of the capital from Winchester to London. Following the death of Harold Godwinson at Hastings, the Anglo-Saxon Witenagemot elected as king Edgar the Ætheling, the son of Edward the Exile and grandson of Edmund Ironside. The young monarch was unable to resist the invaders and was never crowned. William was crowned King William I of England on Christmas Day 1066, in Westminster Abbey, and is today known as William the Conqueror, William the Bastard or William I.

Henry I left no legitimate male heirs, his son William Adelin having died in the White Ship disaster. This ended the direct Norman line of kings in England. Henry named his eldest daughter, Matilda (Countess of Anjou by her second marriage to Geoffrey Plantagenet, Count of Anjou, as well as widow of her first husband, Henry V, Holy Roman Emperor), as his heir. Before naming Matilda as heir, he had been in negotiations to name his nephew Stephen of Blois as his heir. When Henry died, Stephen invaded England, and in a coup d'etat had himself crowned instead of Matilda. The period which followed is known as The Anarchy, as parties supporting each side fought in open warfare both in Britain and on the continent for the better part of two decades.

Matilda was declared heir presumptive by her father, Henry I, after the death of her brother on the White Ship, and acknowledged as such by the barons. Upon Henry I's death, the throne was seized by Matilda's cousin, Stephen of Blois. During the ensuing Anarchy, Matilda controlled England for a few months in 1141—the first woman to do so—but was never crowned and is rarely listed as a monarch of England.^[7]

Count Eustace IV of Boulogne (c. 1130 – 17 August 1153) was appointed co-king of England by his father, King Stephen, on 6 April 1152, in order to guarantee his succession to the throne (as was the custom in France, but not in England). The Pope and the Church would not agree to this, and Eustace was not crowned. Eustace died the next year aged 23, during his father's lifetime, and so never became king in his own right.^[102]

King Stephen came to an agreement with Matilda in November 1153 with the signing of the Treaty of Wallingford, where Stephen recognised Henry, son of Matilda and her second husband Geoffrey Plantagenet, Count of Anjou, as the designated heir. The royal house descended from Matilda and Geoffrey is widely known by two names, the House of Anjou (after Geoffrey's title as Count of Anjou) or the House of Plantagenet, after his sobriquet. Some historians prefer to group the subsequent kings into two groups, before and after the loss of the bulk of their French possessions, although they are not different royal houses.

The Angevins ruled over the Angevin Empire during the 12th and 13th centuries, an area stretching from the Pyrenees to Ireland. They did not regard England as their primary home until most of their continental domains were lost by John. Though the Angevin dynasty was short-lived, their male line descendants included the House of Plantagenet, the House of Lancaster and the House of York.

The Angevins formulated England's royal coat of arms, which usually showed other kingdoms held or claimed by them or their successors, although without representation of Ireland for quite some time. Dieu et mon droit has generally been used as the motto of English monarchs since being adopted by Edward III,^[103] but it was first used as a battle cry by Richard I in 1198 at the Battle of Gisors, when he defeated the forces of Philip II of France, after which he made it his motto.^[103][104]

Henry II named his son, another Henry (1155–1183), as co-ruler with him. But this was a Norman custom of designating an heir, and the younger Henry did not outlive his father and rule in his own right, so he is not counted as a monarch on lists of kings.

Louis VIII of France briefly won about half of England over to his side from 1216 to 1217 at the conclusion of the First Barons' War against King John. On marching into London he was openly received by the rebel barons and citizens of London and proclaimed (though not crowned) king at St Paul's cathedral. Many nobles, including Alexander II of Scotland for his English possessions, gathered to give homage to him. However, in signing the Treaty of Lambeth in 1217, Louis conceded that he had never been the legitimate king of England.

The House of Plantagenet takes its name from Geoffrey Plantagenet, Count of Anjou, husband of the Empress Matilda and father of Henry II. The name Plantagenet itself was unknown as a family name per se until Richard of York adopted it as his family name in the 15th century. It has since been retroactively applied to English monarchs from Henry II onward. It is common among modern historians to refer to Henry II and his sons as the "Angevins" due to their vast continental Empire, and most of the Angevin kings before John spent more time in their continental possessions than in England.

It is from the time of Henry III, after the loss of most of the family's continental possessions, that the Plantagenet kings became more English in nature. The Houses of Lancaster and York are cadet branches of the House of Plantagenet.

This house descended from Edward III's third surviving son, John of Gaunt. Henry IV seized power from Richard II (and also displaced the next in line to the throne, Edmund Mortimer (then aged 7), a descendant of Edward III's second son, Lionel of Antwerp).

The House of York claimed the right to the throne through Edward III's second surviving son, Lionel of Antwerp, but it inherited its name from Edward's fourth surviving son, Edmund of Langley, first Duke of York.

The Wars of the Roses (1455–1485) saw the throne pass back and forth between the rival houses of Lancaster and York.

The Tudors descended in the female line from John Beaufort, one of the illegitimate children of John of Gaunt (third surviving son of Edward III), by Gaunt's long-term mistress Katherine Swynford. Those descended from English monarchs only through an illegitimate child would normally have no claim on the throne, but the situation was complicated when Gaunt and Swynford eventually married in 1396 (25 years after John Beaufort's birth). In view of the marriage, the church retroactively declared the Beauforts legitimate via a papal bull the same year.^[130] Parliament did the same in an Act in 1397.^[131] A subsequent proclamation by John of Gaunt's legitimate son, King Henry IV, also recognised the Beauforts' legitimacy, but declared them ineligible ever to inherit the throne.^[132] Nevertheless, the Beauforts remained closely allied with Gaunt's other descendants, the Royal House of Lancaster.

John Beaufort's granddaughter Lady Margaret Beaufort was married to Edmund Tudor. Tudor was the son of Welsh courtier Owain Tudur (anglicised to Owen Tudor) and Catherine of Valois, the widow of the Lancastrian King Henry V. Edmund Tudor and his siblings were either illegitimate, or the product of a secret marriage, and owed their fortunes to the goodwill of their legitimate half-brother King Henry VI. When the House of Lancaster fell from power, the Tudors followed.

By the late 15th century, the Tudors were the last hope for the Lancaster supporters. Edmund Tudor's son became king as Henry VII after defeating Richard III at the Battle of Bosworth Field in 1485, winning the Wars of the Roses. King Henry married Elizabeth of York, daughter of Edward IV, thereby uniting the Lancastrian and York lineages. (See family tree.)

With Henry VIII's break from the Roman Catholic Church, the monarch became the Supreme Head of the Church of England and of the Church of Ireland. Elizabeth I's title became the Supreme Governor of the Church of England.

Edward VI named Lady Jane Grey as his heir in his will, overruling the order of succession laid down by Parliament in the Third Succession Act. Four days after his death on 6 July 1553, Jane was proclaimed queen—the first of three Tudor women to be proclaimed queen regnant. Nine days after the proclamation, on 19 July, the Privy Council switched allegiance and proclaimed Edward VI's Catholic half-sister Mary queen. Jane was executed for treason in 1554, aged 16.

Under the terms of the marriage treaty between Philip I of Naples (Philip II of Spain from 15 January 1556) and Queen Mary I, Philip was to enjoy Mary's titles and honours for as long as their marriage should last. All official documents, including Acts of Parliament, were to be dated with both their names, and Parliament was to be called under the joint authority of the couple. An Act of Parliament gave him the title of king and stated that he "shall aid her Highness … in the happy administration of her Grace's realms and dominions"^[140] (although elsewhere the Act stated that Mary was to be "sole queen"). Nonetheless, Philip was to co-reign with his wife.^[141]

As the new King of England could not read English, it was ordered that a note of all matters of state should be made in Latin or Spanish.^{[141][142][143]} Coins were minted showing the heads of both Mary and Philip, and the coat of arms of England (pictured right) was impaled with Philip's to denote their joint reign.^[144][145] Acts which made it high treason to deny Philip's royal authority were passed in England (see Treason Act 1554) and Ireland.^[146] In 1555, Pope Paul IV issued a papal bull recognising Philip and Mary as rightful King and Queen of Ireland.

Following the death of Elizabeth I in 1603 without issue, her first cousin twice removed, King James VI of Scotland, succeeded to the English throne as James I in the Union of the Crowns. James was descended from the Tudors through his great-grandmother, Margaret Tudor, the eldest daughter of Henry VII and wife of James IV of Scotland. In 1604, he adopted the title King of Great Britain. However, the two parliaments remained separate until the Acts of Union 1707.^[148]

No monarch reigned between the execution of Charles I in 1649 and the Restoration of Charles II in 1660. Between 1649 and 1653, there was no single English head of state, as England was ruled directly by the Rump Parliament with the English Council of State acting as executive power during a period known as the Commonwealth of England. After a coup d'etat in 1653, Oliver Cromwell forcibly took control of England from Parliament. He dissolved the Rump Parliament at the head of a military force and England entered a period known as The Protectorate, under Cromwell's direct control with the title Lord Protector.

While not officially monarchs, the holder of the office of Lord Protector passed from Oliver Cromwell to his son Richard. Richard lacked both the ability to rule and confidence of the Army, and he was forcibly removed by the English Committee of Safety under the leadership of Charles Fleetwood in May 1659. England again lacked any single head of state during several months of conflict between Fleetwood's party and that of George Monck. Monck took control of the country in December 1659, and after almost a year of anarchy, the monarchy was formally restored when Charles II returned from France to accept the throne of England. This was following the Declaration of Breda and an invitation to reclaim the throne from the Convention Parliament of 1660.

After the Monarchy was restored, England came under the rule of Charles II, whose reign was relatively peaceful domestically, given the tumultuous time of the Interregnum years. Tensions still existed between Catholics and Protestants. With the ascension of Charles's brother, the openly Catholic James II, England was again sent into a period of political turmoil.

James II was ousted by Parliament less than three years after ascending to the throne, replaced by his daughter Mary II and her husband (also his nephew) William III during the Glorious Revolution. While James and his descendants would continue to claim the throne, all Catholics (such as James and his son Charles) were barred from the throne by the Act of Settlement 1701, enacted by Anne, another of James's Protestant daughters. After the Acts of Union 1707, England as a sovereign state ceased to exist, replaced by the new Kingdom of Great Britain.

The Acts of Union 1707 were a pair of Parliamentary Acts passed during 1706 and 1707 by the Parliament of England and the Parliament of Scotland to put into effect the Treaty of Union agreed on 22 July 1706. The acts joined the Kingdom of England and the Kingdom of Scotland (previously separate sovereign states, with separate legislatures but with the same monarch) into the Kingdom of Great Britain.^[163]

England, Scotland, and Ireland had shared a monarch for more than a hundred years, since the Union of the Crowns in 1603, when King James VI of Scotland inherited the English and Irish thrones from his first cousin twice removed, Queen Elizabeth I. Although described as a Union of Crowns, until 1707 there were in fact two separate crowns resting on the same head. There had been attempts in 1606, 1667, and 1689, to unite England and Scotland by Acts of Parliament, but it was not until the early 18th century that the idea had the support of both political establishments behind it, albeit for rather different reasons.

The standard title for all monarchs from Æthelstan until the time of King John was Rex Anglorum ("King of the English"). In addition, many of the pre-Norman kings assumed extra titles, as follows:

In the Norman period Rex Anglorum remained standard, with occasional use of Rex Anglie ("King of England"). The Empress Matilda styled herself Domina Anglorum ("Lady of the English").

From the time of King John onwards all other titles were eschewed in favour of Rex or Regina Anglie.

In 1604 James I, who had inherited the English throne the previous year, adopted the title (now usually rendered in English rather than Latin) King of Great Britain. The English and Scottish parliaments, however, did not recognise this title until the Acts of Union of 1707 under Queen Anne (who was Queen of Great Britain rather than king).^[16]