The English overseas possessions, also known as the English colonial empire, comprised a variety of overseas territories that were colonized, conquered, or otherwise acquired by the former Kingdom of England during the centuries before the Acts of Union of 1707 between the Kingdom of England and the Kingdom of Scotland created the Kingdom of Great Britain. The many English possessions then became the foundation of the British Empire and its fast-growing naval and mercantile power, which until then had yet to overtake those of the Dutch Republic, the Kingdom of Portugal, and the Kingdom of Spain.
The first English overseas settlements were established in Ireland, quickly followed by others in North America, Bermuda, and the West Indies, and by trading posts called "factories" in the East Indies, such as Bantam, and in the Indian subcontinent, beginning with Surat. In 1639, a series of English fortresses on the Indian coast was initiated with Fort St George. In 1661, the marriage of King Charles II to Catherine of Braganza brought him as part of her dowry new possessions which until then had been Portuguese, including Tangier in North Africa and Bombay in India.