Smith's Bank was a series of English banking partnerships in London and the provinces, all controlled by the Smith family that operated between 1658 and 1918. Although Smith's Bank was never a single entity, the first bank was established in Nottingham by Thomas Smith; often dated to 1658, it is believed to be the first bank to be formed outside London.

National Provincial Bank was a retail bank which operated in England and Wales. It was created in 1833 as National Provincial Bank of England, and expanded largely by taking over a number of other banks. Following the transformative acquisition of Union Bank of London in 1918, it changed its name to National Provincial and Union Bank of England, then in 1924 shortened its name again to National Provincial Bank. It further acquired Coutts Bank in 1920, Grindlays Bank in 1924, Isle of Man Bank in 1961, District Bank in 1962, thus becoming one of the "Big Five" that dominated the UK banking sector for much of the 20th century, together with Barclays Bank, Lloyds Bank, Midland Bank and Westminster Bank. On 1 January 1970, it completed its merger with Westminster Bank to form National Westminster Bank.