This list of kings and reigning 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.^[1]

Arguments are made for a few different kings thought to have controlled 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."^[2] 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.^[3][4] Likewise, 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 southern 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.^[3][4] 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 standard title for monarchs from Æthelstan until John was "King of the English". In 1016 Cnut the Great, a Dane, was the first to call himself "King of England". In the Norman period "King of the English" remained standard, with occasional use of "King of England" or Rex Anglie. From John's reign onwards all other titles were eschewed in favour of "King" or "Queen of England".

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, the eldest sons of all English monarchs, except for King Edward III,^{[lower-alpha 1]} have borne this title.

After the death of Queen Elizabeth I without issue in 1603, her cousin King James VI of Scotland inherited the English crown as 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 during the reign of Queen Anne to form the new Kingdom of Great Britain, with a single British parliament sitting at Westminster. This marked the end of the Kingdom of England as a sovereign state.

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,^[21] 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.^[23] 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 Saxon Restoration between 1042 and 1066.

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), 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 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 of 1120. 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 travelled to 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.

The House of Plantagenet takes its name from Geoffrey Plantagenet, Count of Anjou, husband of 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.

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.^[61] Parliament did the same in an Act in 1397.^[62] 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.^[63] 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.)

Elizabeth's cousin, 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.^[75]

No monarch reigned after the 1649 execution of Charles I. 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 The Protectorate period, under Cromwell's direct control with the title Lord Protector.

It was within the power of the Lord Protector to choose his heir and Oliver Cromwell chose his eldest son, Richard Cromwell, to succeed him.

Richard Cromwell was forcibly removed by the English Committee of Safety in May 1659. England again lacked any single head of state. After almost a year of anarchy, the monarchy was formally restored when Charles II returned from France to accept the throne.

The Monarchy was restored under the rule of Charles II.

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.^[88]

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:

• Æthelstan: Rex totius Britanniae ("King of the Whole of Britain")
• Edmund the Magnificent: Rex Britanniæ ("King of Britain") and Rex Anglorum cæterarumque gentium gobernator et rector ("King of the English and of other peoples governor and director")
• Eadred: Regis qui regimina regnorum Angulsaxna, Norþhymbra, Paganorum, Brettonumque ("Reigning over the governments of the kingdoms of the Anglo-Saxons, Northumbrians, Pagans, and British")
• Eadwig the Fair: Rex nutu Dei Angulsæxna et Northanhumbrorum imperator paganorum gubernator Breotonumque propugnator ("King by the will of God, Emperor of the Anglo-Saxons and Northumbrians, governor of the pagans, commander of the British")
• Edgar the Peaceful: Totius Albionis finitimorumque regum basileus ("King of all Albion and its neighbouring realms")
• Cnut the Great: Rex Anglorum totiusque Brittannice orbis gubernator et rector ("King of the English and of all the British sphere governor and ruler") and Brytannie totius Anglorum monarchus ("Monarch of all the English of Britain")

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).^{[lower-alpha 12]}