- 1690 1 Jul William III decisively defeats the deposed James II at the Battle of the Boyne, Ireland.
- 1916 1 Jul The British Army suffers its worst day, losing 19,240 men on the first day of the Battle of the Somme.
- 1997 1 Jul Britain hands the island of Hong Kong - ceded in 1841 - back to the People's Republic of China.

