While it is often portrayed in popular culture as being a fairly homogenous place, since long before Roman times, Britain has actually been quite a melting pot. People fleeing persecution, war or lack of opportunity all over the world have fled there, and the island nation has welcomed a mix of cultures and ideas for centuries.
Wiki Commons by National Museum of the U.S. Navy
The image of World War Two that is most commonly depicted in the United Kingdom shows legions of handsome young British-born men going toe-to-toe with an enemy who looks just like them. This is absolutely fair but leaves out the heroism of millions of Indian, African, ANZAC and other troops who stood by their side. Many of these later settled in the UK, including notably the Nepalese Gurkhas, who were initially denied the right to immigrate. A grateful populace rose up to protest, and the iconic Gurkhas were eventually welcomed and permitted to become British.
Wiki Commons by Arpingstone
Nobody likes the experience of flying with low-cost airlines, but everyone loves their prices. The leading British name in this field is the frightfully English airline known as EasyJet. It is the brainchild of a Cypriot immigrant called Sir Stelios Haji-Ioannou, whose shipping magnate father backed him in building a company that helped make it possible for the masses to enjoy an (admittedly very uncomfortable) annual journey to sunnier climes.