- 1832 4 Jun The Great Reform Act redistributes parliamentary seats, giving due weight to Britain's industrial cities.
- 1913 4 Jun Suffragette Emily Davison dies after throwing herself in front of the king's horse at the Epsom Derby.
- 1944 4 Jun The US Fifth Army reaches central Rome, making it the first Axis capital to fall. A formal procession takes place the next day.

