Complex sentence: On 27 August 2007, the station (along with all stations further up the valleys) was closed to enable work can be carried out to enable longer trains to be accommodated, starting with the northbound platform.
Split into simpler sentences: On 27 August 2007, the station and along with all stations further up the valleys, were closed. To enable work can be carried out to enable longer trains to be accommodated, starting with the northbound platform.