World War II lasted 6 years and 1 day from September 1st, 1939 with the German invasion of Poland, to September 2nd, 1945 with the forced Japanese surrender in the Pacific. Quite a lot happened in the UK in those 6 years. Much of the UK was damaged by bombing, and soldiers from the UK were wounded and killed. A large number of US, Canadian, Free French and Free Polish soldiers were based in the UK. There were shortages of food, fuel and everyday items due to the war.
The United Kingdom has been a Parliamentary Monarchy for centuries.
No he was the president of the United States, Winston Churchill was the Prime Minister of the United Kingdom during World War 2.
During World War 1, there were hundreds of German spies who were caught in the United Kingdom. They were all killed upon captivity.
As a part of the United Kingdom, Northern Ireland fought against Germany, Italy, Japan and their allies.
no one knows
United States Navy operations during World War I happened in 1917.
France, Russia, and later, Italy and the United States
Mostly Germany and Japan.