Engineering work is taking place each night from 01:10 until 04:40, closing some lines between Witham and Colchester.
Engineering work is taking place between Richmond and South Acton, closing all lines.
No London Overground service will operate between Richmond and South Acton. Buses will operate, provided by London Underground between Richmond and Acton Central.
Engineering work is taking place between Settle and Garsdale, closing all lines.
Services between Leeds and Carlisle will run between Appleby and Carlisle only.
Engineering work is taking place between Edinburgh and Drem, closing some lines all day on Saturday, and until 09:00 on Sunday.
As a result, services between Glasgow Central / Ayr and North Berwick / Dunbar will not run between Edinburgh and North Berwick / Dunbar.
Engineering work is taking place between Hunts Cross and Edge Hill from 23:55 each night, closing all lines.
Engineering work is taking place between Slough and Twyford, closing some lines.
After 23:45 on Saturday, no trains will call at Burnham or Taplow. Replacement buses will run between Slough and Burnham / Taplow.
Engineering work is taking place between Camden Road and Stratford after 22:00 on Sunday 28 October, closing all lines.
As a result, buses will replace trains between Camden Road and Stratford.
Ticket acceptance:
Engineering work is taking place between Bradford Interchange and Leeds, closing all lines.
Engineering work is taking place between Dunbridge and Redbridge until approximately 09:55 on Sunday 28 October, closing all lines.
Engineering work is taking place between Bristol Temple Meads and Montpelier / Clifton Down on Saturday 27 and Sunday 28 October, closing all lines.
As a result, buses will replace trains between Bristol Temple Meads and Avonmouth / Severn Beach.