Engineering work is taking place between Alexandra Palace and Stevenage via Hertford North from 23:00 on Saturday and all day Sunday, closing some lines.
Engineering work is taking place between Gravesend and Gillingham / Rainham from 23:45 until 04:00 each morning (ending Friday morning), closing some lines.
Engineering work is taking place between South Croydon and Caterham / Tattenham Corner from 23:00 until 04:00 each morning (ending Friday morning), closing some lines.
Engineering work is taking place between Horsham and Barnham / Chichester / Portsmouth from 22:30 until 04:00 each morning (ending Friday morning), closing some lines.
Engineering work is taking place between Ebbsfleet International and Ashford International, closing all lines on Saturday evening.
Engineering work is taking place between Cambridge and Stansted Airport, closing all lines.
CrossCountry:
Buses will replace trains between Cambridge and Stansted Airport.
Engineering work is taking place between Alexandra Palace and Stevenage via Hertford North, closing all lines on Sunday morning.
Engineering work is taking place between Cambridge and Kings Lynn, closing all lines late on Sunday evening.
Engineering work is taking place between Machynlleth and Aberystwyth, closing all lines overnight from Sunday evening until Monday morning.
Engineering work is taking place between Machynlleth and Aberystwyth, closing all lines overnight from Monday evening until Friday morning.