As a result of the introduction of the SWR service, the number of Great Western Railway (GWR) trains between Portsmouth Harbour and Cardiff that stop at Dean was reduced. Since October 2011, there have been no GWR trains stopping at Dean, and from April 2020 the management of the station was transferred from GWR to SWR.
The introduction of the SWR service led to a decrease in the number of Great Western Railway (GWR) trains serving the route between Portsmouth Harbour and Cardiff that stop at Dean. As of October 2011, no GWR trains have stopped at Dean, and since April 2020, the station has been managed by SWR instead of GWR.