Engineering work is taking place between Balham and East Croydon, closing some lines each night.
From approximately 23:55, buses will replace trains between Selhurst and Sutton.
Engineering work is taking place between Blackpool South and Kirkham & Wesham, closing all lines.
Buses will be replace trains between Blackpool South and Preston.
Engineering work is taking place between Machynlleth and Newtown, closing the line.
All day Sunday buses will replace trains between Machynlleth and Newtown.
Check before you travel:
Bridge and tunnel maintenance is taking place between Bathgate and Edinburgh, closing all lines.
Engineering work is taking place between Wigan North Western and Preston closing 2 out of 4 lines.
Buses will replace trains between Wigan North Western and Preston.
Late night engineering work is taking place between York and Newcastle closing some lines.
The 22:00 London Kings Cross to Newcastle is replaced by a bus between York and Newcastle.
Engineering work is taking place between Sittingbourne and Sheerness-on-Sea, closing all lines.
Buses will replace trains between Sittingbourne and Sheerness-on-Sea.
Engineering work is taking place between Chester and Hooton, closing all lines.
Buses will replace trains between Chester and Hooton, connecting into onward train services.
Engineering work is taking place between Willesden Junction and Shepherds Bush, closing all lines until 12:00.
Late night engineering work is taking place between Dalmeny and Haymarket closing some lines.