Parts of the station, including the main train shed, date from 1854, when it was built by Isambard Kingdom Brunel as the London terminus for the Great Western Railway (GWR).
Dele af stationen, heriblandt hovedbanegårdshallen, daterer fra 1854, da det blev bygget af Isambard Kingdom Brunel som Londons endestation for Great Western Railway (GWR).