Major engineering work is taking place on the Barmouth Viaduct, closing all lines from Monday 13 September to Saturday 11 December.
As a result, no trains will run between Machynlleth and Pwllheli.
Replacement buses will run between Machynlleth and Pwllheli.
Engineering work is taking place between Colchester and Clacton-on-Sea / Walton-on-the-Naze, closing all lines on Saturday evening.
Engineering work is taking place between Helensburgh Central / Balloch and Dalmuir, closing all lines.
Buses will replace trains between Helensburgh Central / Balloch and Dalmuir.
Engineering work is taking place between Kettering and Leicester, closing some lines.
Engineering work is taking place at Upper Halliford, closing some of the platforms until December.
Engineering work is taking place between Bradford Interchange and Westfield Kirkgate, closing various lines all day.
Engineering work is taking place between Balham and East Croydon, resulting in the closure of some lines.
The 23:40 London Victoria to Sutton will be diverted after Selhurst and terminate at East Croydon.
Engineering work is taking place between Balham and East Croydon, resulting in the closure of some lines.
The 23:54 London Bridge to Selhurst service will terminate at Tulse Hill.
Engineering work is taking place between Redhill and Tonbridge, closing lines overnight from Monday evening until Friday morning.
Engineering work is taking place between Swindon and Bristol Temple Meads, resulting in the closure of some lines.