Britishness is the state or quality of being British, or of embodying British characteristics, and is used to refer to that which binds and distinguishes the British people and forms the basis of their unity and identity, or else to explain expressions of British culture—such as habits, behaviours or symbols—that have a common, familiar or iconic quality readily identifiable with the United Kingdom. Dialogue about the legitimacy and authenticity of Britishness is intrinsically tied with power relations and politics; in terms of nationhood and belonging, expressing or recognising one's Britishness provokes a range of responses and attitudes, such as advocacy, indifference or rejection. Macphee and Poddar state that although the designation of the two differing terms, Britishness and Englishness, is not simple as they are invariably conflated, they are both tied into the identity of the British nation and empire, since these last two are altering considerably as Englishness and Britishness do too. Thus the slippage between the two words can be seen as a play between these changing dynamics.

Elizabeth II (Elizabeth Alexandra Mary; born 21 April 1926) is the constitutional monarch of 16 sovereign states known as the Commonwealth realms, and head of the 54-member Commonwealth of Nations. She is also head of state of the Crown Dependencies.

Elizabeth was born in London, and educated privately at home. Her father acceded to the throne as George VI in 1936 on the abdication of his brother Edward VIII. She began to undertake public duties during the Second World War, in which she served in the Auxiliary Territorial Service. On the death of her father in 1952, she became Head of the Commonwealth and queen regnant of seven independent Commonwealth countries: the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan, and Ceylon. Her coronation service in 1953 was the first to be televised. Between 1956 and 1992, the number of her realms varied as territories gained independence and some realms became republics. Today, in addition to the first four aforementioned countries, Elizabeth is Queen of Jamaica, Barbados, the Bahamas, Grenada, Papua New Guinea, the Solomon Islands, Tuvalu, Saint Lucia, Saint Vincent and the Grenadines, Belize, Antigua and Barbuda, and Saint Kitts and Nevis.

British people (also referred to as the British, Britons, or informally as Brits or Britishers) are citizens or natives of the United Kingdom, of the Isle of Man, of any of the Channel Islands, or of any of the British overseas territories, and their descendants.British nationality law governs modern British citizenship and nationality, which can be acquired, for instance, by birth in the UK or by descent from British nationals. When used in a historical context, the term British people refers to the ancient Britons, the indigenous inhabitants of Great Britain south of the Forth.

Although early assertions of being British date from the Late Middle Ages, the creation of the Kingdom of Great Britain in 1707 triggered a sense of British national identity. The notion of Britishness was forged during the Napoleonic Wars between Britain and the First French Empire, and developed further during the Victorian era. The complex history of the formation of the United Kingdom created a "particular sense of nationhood and belonging" in Great Britain; Britishness became "superimposed on much older identities", of English, Scots and Welsh cultures, whose distinctiveness still resist notions of a homogenised British identity. Because of longstanding ethno-sectarian divisions, British identity in Northern Ireland is controversial, but it is held with strong conviction by unionists.