Principality Building Society
Principality Building Society is the largest building society in Wales, and the sixth largest in the UK. Its roots date back to the middle of the 19th century.
As Principality is a building society, it's owned by its members rather than shareholders.
In 2015 it bought the naming rights to the Millennium Stadium in Cardiff, which in 2016 was renamed the Principality Stadium.
It provides several different banking products, though it doesn't offer a current account.