What was described as the worst surrender in British history?

The fall of Singapore was arguably the worst defeat in British military history.

Britain thought that Singapore was protected, as huge guns pointed out to sea. They did not think it was possible to attack through the Malayan jungle. They did not have tanks there for this reason.

Japan thought otherwise. They came through the jungle with tanks and on bicycles.

The guns could not be moved to face inwards. The British defenders were sitting ducks.

85000 British, Australian and Indian troops were captured and taken prisoner by the Japanese force of just 30000.

For this reason, it was the worst defeat in British military history./// While the loss of Singapore in WWII was significant, I would say the loss of the American Revolutionary War would top the list. They lost what would become the greatest nation on earth. jamcam44 only gave the info. which follows the ///.