I think we need a lot more context to be able to answer this question.
Some British people leave Great Britain every day.
The flag of Great Britain is on the summit of Mount Everest because a British climber left it there. Climbers from all over the world usually leave there countrys flag on the summit.
No, Ireland and Britain are different countries, you would have to leave the Irish Army, then try to get permission to join the British army
The net immigration in Britain is inward not outward at the moment.
the great compromise
Cyprus left the British Empire because it wished to unify with Greece as one nation which Britain would not allow. This was known as Enosis which roughly translated means butterfly.
In 1713 the French king gave present day Nova Scotia to Britain. The British told the Acadians that they would either swear allegiance to Britain or they must leave.
So they could have freedom of speech and religion.
Great Britain
During the American Revolution, a number of colonists wanted to remain loyal to Great Britain. Because of social pressure from many other Americans that wanted independence, many loyalists decided to move to British Canada.
There were several differences, but the clearest is that French colonial rule was direct from the Paris while British colonial rule preferred to leave amenable local leaders in charge.
There were several differences, but the clearest is that French colonial rule was direct from the Paris while British colonial rule preferred to leave amenable local leaders in charge.
During the American Revolutionary Period, particularly after 1783, loyalists from the fledgling United States of America often started new lives in either Great Britain itself or the British colonies that would later become the nation of Canada. It should be noted that not all loyalists chose to leave America, but those who did typically found refuge in areas that remained under the control of the 'mother-country' of Great Britain.