5 June – Robert Devereux, 2nd Earl of Essex, former favourite of the Queen, is put on trial before a commission of 18 after being charged with malfeasance. He is deprived of his main business, a monopoly on sweet wines, and stripped of his noble title.
5 March – The treason trial for five secondary participants in Essex's Rebellion – Gelli Meyrick, Henry Cuffe, Christopher Blount, Charles Danvers and Sir John Davies – is held in London. All five are found guilty. Meyrick and Cuffe are hanged at Tyburn on 13 March, and Blount and Danvers are beheaded at Tower Hill on 18 March. Davies is allowed to go free.
6 December – The Battle of Castlehaven is fought off the south coast of Ireland as six Spanish navy ships led by General Pedro de Zubiaur are intercepted by an English fleet of four warships led and commanded by Sir Richard Levenson. Two of the Spanish ships are sunk and the other four are run aground.
18 June – Nine Years' War (Ireland): Dunboy Castle in Ireland is taken by the English after an 11-day siege by more than 4,000 English soldiers under the command of Sir George Carew. The 143 Irish soldiers are either killed in the siege or hanged afterwards.
King James I of England/VI of Scotland, the first monarch to rule the Kingdoms of England and Scotland at the same time
24 January – Anglo-Spanish War: English Admiral Christopher Newport leads an unsuccessful attempt to take the Spanish-controlled Caribbean island of Jamaica, where he is attempting to pillage the area to obtain supplies.
24 March – Queen Elizabeth I dies at Richmond Palace aged 69, after 45 years on the throne, and is succeeded by her first cousin twice removed King James VI of Scotland (where he has ruled since 1567), hence the Union of the Crowns of Scotland and England. Elizabeth was never married and had no children, neither did her only legitimate siblings, the late Mary and Edward VI.
5 April – James VI and I sets out from Edinburgh for London.
April – Thomas Cartwright delivers his Millenary Petition, demanding an end to ritualistic practices, allegedly signed by 1,000 Puritan ministers, to the King, who is en route to London.
c. April – 1603 London plague: Outbreak of bubonic plague epidemic in London in which between 29,000 and 40,000 die. The theatres are closed.
24 June – Planned date for "Bye Plot", a conspiracy to kidnap King James in the interest of tolerance for Roman Catholic priests and Puritans.
July – "Main Plot", an alleged conspiracy by English courtiers to remove James from the English throne and to replace him with his cousin Lady Arbella Stuart.
17 July – Sir Walter Raleigh is arrested for treason in connection with the "Main Plot".
November–December – The court is in residence at Wilton House in Wiltshire due to the London plague.
17 November – Raleigh goes on trial for treason in the converted Great Hall of Winchester Castle. He is found guilty but his life is spared by the King at this time and he is returned to imprisonment in the Tower of London.
2 December – The King's Men perform a play for the court at Wilton House, perhaps As You Like It.
1604
1 January – The earliest recorded performance of William Shakespeare's comedy A Midsummer Night's Dream (probably premiered in 1595–96) takes place at Hampton Court.
2 April – Speaker of the House of CommonsSir Edward Phelips rules that members of the House may not bring forward an identical (or near-identical) motion to one that has already been decided in that same session.
18 August – The Treaty of London brings an end to the Anglo–Spanish War.
4 July – The Jesuits etc. Act 1603 (An Act for the due execution of the Statutes against Jesuits, seminary Priests and recusants) is given royal assent, creating penalties against Jesuits and Catholics who send their children abroad to Catholic colleges.
7 July – Parliament prorogued, after failing to grant the King all the subsidies he has asked for.
5 November – Gunpowder Plot: a plot to blow up the Houses of Parliament is foiled when, following an anonymous tip-off (passed to Lord Monteagle in October), Sir Thomas Knyvet, a justice of the peace, finds Catholic plotter Guy Fawkes in a cellar below the Parliament building and orders a search of the area, finding 36 barrels of gunpowder. Fawkes is arrested for trying to kill King James I and the members who were scheduled to sit together in Parliament the next day. Fawkes speaks the legendary words: "Remember, remember, the Fifth of November".
31 January – Fawkes and three of his co-plotters are executed by hanging, drawing and quartering in London, four having been executed the previous day.
24 February – Commercial treaty between England and France signed in Paris.
Spring – Ben Jonson's satiric play Volpone first performed, in London.
27 May – Severe penalties are imposed for Catholic recusancy, and for refusal to take an Oath of Allegiance to James to serve in public office, under terms of the Popish Recusants Act 1605 (An Act for the better discovering and repressing of popish recusants, proclaimed law 22 June).
27 May – Second session of Parliament under King James prorogued.
10 July – 47 Roman Catholic priests, including Thomas Garnet, are deported to Flanders on pain of death if they return to England.
30 January – Coastal flooding around Britain, probably a storm surge, including Bristol Channel floods in which a massive wave sweeps along the Bristol Channel, killing an estimated 2,000 people, with 200 square miles (518km2) of farmland inundated.
late April – Start of Midland Revolt against land enclosures. The rebels are referred to as "Levellers".
14 May – Jamestown, Virginia, is established as the first permanent English settlement in North America.
25 July – The London Company's ship Sea Venture, en route to relieve the Jamestown settlement, is driven ashore in Bermuda, thus effectively first settling the colony.
26 July – English scientist Thomas Harriot becomes the first to draw an astronomical object after viewing it through a telescope: he draws a map of the Moon, preceding Galileo by several months.
12 October – A version of the rhyme "Three Blind Mice" is published in Deuteromelia or The Seconde part of Musicks melodie (London). The editor, and possible author of the verse, is the teenage Thomas Ravenscroft. This collection follows his publication of the first rounds in English, Pammelia.
Plantation of Ulster proceeds: Protestant English and Scots settlers take over forfeited estates of rebel leaders.
↑Edwards, Phillip, ed. (1985). Hamlet, Prince of Denmark. New Cambridge Shakespeare. p.8. ISBN0-521-29366-9. Any dating of Hamlet must be tentative. Scholars date its writing as between 1599 and 1601.
↑Stafford, Thomas (1896). Pacata Hibernia; or, A history of the wars in Ireland, during the reign of Queen Elizabeth. Vol.II. London: Downy.
↑Shakespeare, William (2001). Smith, Bruce R. (ed.). Twelfth Night: Texts and Contexts. Boston, Mass: Bedford/St Martin's. p.2. ISBN0-312-20219-9.
↑Schlieff, Karle. "Gosnold: 1602". Ancient Lights. Retrieved 26 December 2022.
↑Wernham, R. B. (1994). The Return of the Armadas: The Last Years of the Elizabethan Wars Against Spain 1595–1603. Clarendon Press. p.395–6.
↑Cusack, Mary Francis (1868). An Illustrated History of Ireland: From the Earliest Period. Irish National Publications. p.410.
↑Ibbetson, David (1984). "Sixteenth Century Contract Law: Slade's Case in Context". Oxford Journal of Legal Studies. 4 (3). Oxford University Press: 295–317. doi:10.1093/ojls/4.3.295. ISSN0143-6503.(subscription required)
↑Dekker, Thomas. The Wonderfull Yeare 1603, wherein is shewed the picture of London lying sicke of the plague.
↑Lee, Christopher (2014). 1613: The Death of Queen Elizabeth I, the Return of the Black Plague, the Rise of Shakespeare, Piracy, Witchcraft, and the Birth of the Stuart Era. St Martin's Press. ISBN9781466864504.
↑Loomie, Albert J. (1963). "Toleration and Diplomacy: The Religious Issue in Anglo-Spanish Relations, 1603–1605". Transactions of the American Philosophical Society: 31.
↑The exact date is unknown, but a surviving account book for the year ended September 30 1604 proves it was built within the preceding 12 months.