An ancient borough was a historic unit of lower-tier local government in England and Wales. The ancient boroughs covered only important towns and were established by charters granted at different times by the monarchy. Their history is largely concerned with the origin of such towns and how they gained the right of self-government. Ancient boroughs were reformed by the Municipal Corporations Act 1835, which introduced directly elected corporations and allowed the incorporation of new industrial towns. Municipal boroughs ceased to be used for the purposes of local government in 1974, with borough status retained as an honorific title granted to some post-1974 local government districts by the Crown.

The House of Commons of England was the lower house of the Parliament of England from its development in the 14th century to the union of England and Scotland in 1707, when it was replaced by the House of Commons of Great Britain after the 1707 Act of Union was passed in both the English and Scottish parliaments at the time. In 1801, with the union of Great Britain and Ireland, that house was in turn replaced by the House of Commons of the United Kingdom.