| | Monarch | Dates | Age came to the Throne |
| 1. | King William IV | Born: August 21, 1765 -
Ascended: June 26, 1830 | 64 years 10 months 3 days |
| 2. | King Edward VII | Born: November 9, 1841 -
Ascended: January 22, 1901 | 59 years 2 months 12 days |
| 3. | King George IV | Born: August 12, 1762 -
Ascended: January 29, 1820 | 57 years 5 months 16 days |
| 4. | King George I | Born: May 28, 1660 -
Ascended: August 1, 1714 | 54 years 2 months 2 days |
| 5. | King James II | Born: October 14, 1633 -
Ascended: February 6, 1685 | 51 years 3 months 23 days |
| 6. | King Harold II | Born: c.1020 -
Ascended: January 5, 1066 | 45 years 7 months 4 days |
| 7. | King George V | Born: June 3, 1865 -
Ascended: May 6, 1910 | 44 years 11 months 1 days |
| 8. | King George II | Born: October 30, 1683 -
Ascended: June 11, 1727 | 43 years 7 months 10 days |
| 9. | King Edward VIII | Born: June 23, 1894 -
Ascended: Jan 20, 1936 | 41 years 6 months 27 days |
| 10. | King George VI | Born: December 14, 1895 -
Ascended: Dec 11, 1936 | 40 years 11 months 27 days |
| 11. | King Stephen | Born: c.1097 -
Ascended: December 22, 1135 | 38 years 6 months 19 days |
| 12. | King William I The Conqueror | Born: September 1028 -
Ascended: December 25, 1066 | 38 years 3 months 23 days |
| 13. | King William III and Queen Mary II | Born: November 14, 1650 -
Ascended: February 13, 1689 | 38 years 3 months 0 days |
| 14. | King Edward The Confessor | Born: c.1004 -
Ascended: June 8, 1042 | 38 years 6 days |
| 15. | Queen Mary I | Born: February 8, 1516 -
Ascended: July 19, 1553 | 37 years 5 months 9 days |
| 16. | Queen Anne | Born: February 6, 1665 -
Ascended: March 8, 1702 | 37 years 28 days |
| 17. | King James I | Born: June 19, 1566 -
Ascended: March 24, 1603 | 36 years 9 months 4 days |
| 18. | King Henry IV | Born: April 4, 1366 -
Ascended: September 30, 1399 | 33 years 5 months 26 days |
| 19. | King Edward I Longshanks | Born: June 17, 1239 -
Ascended: November 20, 1272 | 33 years 5 months 4 days |
| 20. | King John | Born: December 24, 1166 -
Ascended: April 6, 1199 | 32 years 3 months 11 days |
| 21. | King Henry I | Born: September, 1068 -
Ascended: August 3, 1100 | 31 years 11 months 0 days |
| 22. | King Richard I The Lion Heart | Born: September 6, 1157 -
Ascended: July 6, 1189 | 31 years 9 months 29 days |
| 23. | King William II Rufus | Born: c.1056 -
Ascended: September 9, 1087 | 31 years 3 months 7 days |
| 24. | King Richard III | Born: October 2, 1452 -
Ascended: June 26, 1483 | 30 years 8 months 23 days |
| 25. | King Charles II | Born: May 29, 1630 -
Ascended: May 29, 1660 | 30 years 0 days |
| 26. | King Athelstan | Born: c.895 -
Ascended: July 17, 924 | 29 years 1 months 15 days |
| 27. | King Henry VII | Born: January 28, 1457 -
Ascended: August 22, 1485 | 28 years 6 months 23 days |
| 28. | King Edmund II lronside | Born: c.990 -
Ascended: April 23, 1016 | 25 years 10 months 21 days |
| 29. | Queen Elizabeth II | Born: April 21, 1926 -
Ascended: February 6, 1952 | 25 years 9 months 16 days |
| 30. | King Henry V | Born: August 9, 1387 -
Ascended: March 20, 1413 | 25 years 7 months 9 days |
| 31. | Queen Elizabeth I | Born: September 7, 1533 -
Ascended: November 17, 1558 | 25 years 2 months 9 days |
| 32. | King Charles I | Born: November 19, 1600 -
Ascended: March 27, 1625 | 24 years 4 months 6 days |
| 33. | King Edward II | Born: April 25, 1284 -
Ascended: July 8, 1307 | 23 years 2 months 11 days |
| 34. | King Edred | Born: c.923 -
Ascended: May 26, 946 | 22 years 11 months 24 days |
| 35. | King George III | Born: June 4, 1738 -
Ascended: October 25, 1760 | 22 years 4 months 21 days |
| 36. | King Harthacnut | Born: c.1018 -
Ascended: March 17, 1040 | 21 years 9 months 15 days |
| 37. | King Henry II | Born: March 5, 1133 -
Ascended: October 25, 1154 | 21 years 7 months 20 days |
| 38. | King Cnut (Canute) | Born: c.995 -
Ascended: November 30, 1016 | 21 years 5 months 29 days |
| 39. | King Harold I Harefoot | Born: c.1016 -
Ascended: November 12, 1035 | 19 years 5 months 11 days |
| 40. | King Edward IV | Born: April 28, 1442 -
Ascended: March 4, 1461 | 18 years 10 months 6 days |
| 41. | King Edmund | Born: c.922 -
Ascended: October 27, 940 | 18 years 4 months 26 days |
| 42. | Queen Victoria | Born: May 24, 1819 -
Ascended: June 20, 1837 | 18 years 27 days |
| 43. | King Henry VIII | Born: June 28, 1491 -
Ascended: April 21, 1509 | 17 years 9 months 22 days |
| 44. | King Edgar | Born: c.943 -
Ascended: October 1, 959 | 16 years 4 months 0 days |
| 45. | King Edwy (Eadwig) | Born: c.940 -
Ascended: November 23, 955 | 15 years 5 months 22 days |
| 46. | King Edward III | Born: November 13, 1312 -
Ascended: January 25, 1327 | 14 years 2 months 11 days |
| 47. | King Edward V | Born: November 4, 1470 -
Ascended: April 9, 1483 | 12 years 5 months 3 days |
| 48. | King Edward The Martyr | Born: c.963 -
Ascended: July 8, 975 | 12 years 1 months 6 days |
| 49. | King Richard II | Born: January 6, 1367 -
Ascended: June 22, 1377 | 10 years 5 months 15 days |
| 50. | King Aethelred II The Unready | Born: c.968 -
Ascended: March 18, 978 | 9 years 9 months 15 days |
| 51. | King Edward VI | Born: October 12, 1537 -
Ascended: January 28, 1547 | 9 years 3 months 16 days |
| 52. | King Henry III | Born: October 1, 1207 -
Ascended: October 18, 1216 | 9 years 17 days |
| 53. | King Henry VI | Born: December 6, 1421 -
Ascended: September 1, 1422 | 8 months 25 days |
