 From 1969 W.W. became a part of the National Bus Company and several years later was a component of the newly formed, but ill-fated, National Welsh operation.Established in 1920 in Cardiff by a brewing family, South Wales Commercial Motors grew by acquisition, eventually operating bus services in South Wales as far west as St David's and Tenby in Pembrokeshire, and as far north as Brecon via the South Wales Valleys.In 1927, the company came to an agreement with the Great Western Railway to take over their bus services in both South Wales, and areas of southern Gloucestershire and northern Somerset surrounding Bristol and Bath.