National Westminster Bank Plc, commonly known as NatWest, is the largest retail and commercial bank in the United Kingdom. Since 2000 it has been part of The Royal Bank of Scotland Group, ranked among the top 10 largest banks in the world by assets. NatWest was established in 1968 by the merger of National Provincial Bank (established 1833 as National Provincial Bank of England) and Westminster Bank (established 1834 as London County and Westminster Bank).