A less common practice is the naming of freight trains, for the same commercial reasons. In the 1960s, the "Condor" was an overnight London to Glasgow express goods train, hauled by pairs of Metro-Vick diesel locomotives. In the mid-1960s, British Rail introduced the Freightliner brand, for the new train services carrying containers between dedicated terminals around the rail network. The Rev. W. Awdry also named freight trains, coining the name "Flying Kipper" for the overnight express fish train that appeared in his stories in "The Railway Series" books.