On the right of the Station Approach but at a lower level is the B&ER office building designed by Samuel Fripp; the 1930s offices known as "Collett House" (named after Charles Collett) and a disused parcels depot lie beyond. On the left is Brunel's original station building. The train shed is wide with a wooden box-frame roof and cast iron columns disguised as hammerbeams above Tudor arches. It is believed to be the widest hammerbeam roof in England and, along with most of the station, is a Grade 1 listed building, and forms part of a proposed Great Western Railway World Heritage Site. At the top of the slope an entrance on the left to the covered car park marks the junction between the original terminus and Fox's 1870s extension.