In 2002, KLM decided to integrate what was left of KLM uk into KLM Cityhopper, its wholly owned, Dutch-based regional subsidiary. It also decided to sell Buzz to Ryanair the following year. This transaction constituted the final link in a long chain of events connecting the early- to mid-20th century decision of British & Commonwealth Shipping, a shipping company that could trace its roots to the 19th century, to diversify into commercial aviation through ownership of several of the post-/pre-war independent airlines that merged to form British United Airways, the UK's dominant private sector airline conglomerate of the 1960s, with what is arguably the world's most commercially successful airline of the first decade of the 21st century.