British may refer to: . Peoples, culture, and language. British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies.. Britishness, the British identity and common culture; British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles; Celtic Britons, an ancient …

Proto-Celtic, or Common Celtic, is the ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European.It is not attested in writing, but has been partly reconstructed through the comparative method.Proto-Celtic is generally thought to have been spoken between 1300 and 800 BC, after which it began to split into different languages.