Cathays Railways Works was a development started by the Taff Vale Railway to provide its main carriage and wagon works, as well as its main railway depot for the entire TVR system. Taken over by the Great Western Railway, it sold off the carriage and wagon works to the Pullman company, who used the site to build pullman carriages.

Today, bth the site of the railway depot and the carriage and wagon works have been redeveloped, mainly with buildings and commercial activities associated with the University of Cardiff.

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