Engineering work is taking place between Carmarthen and Fishguard Harbour / Milford Haven / Pembroke Dock closing the line.
Overnight engineering work is taking place between Hitchin and St Neots, closing some lines between 23:30 and 04:30.
Trains will be unable to call at Arlesey or Sandy.
Overnight engineering work is taking place in the Redhill area, closing some lines between 23:45 and 05:00.
Thameslink trains will not call at Redhill.
Overnight engineering work is taking place in the Redhill area, closing some lines between 23:45 and 05:00.
Thameslink trains will not call at Redhill.
A burst water main near the railway between Barry and Bridgend means all lines are blocked.
Trains between these stations may be cancelled, delayed by up to 20 minutes or diverted. Disruption is expected until 14:15.
Engineering work is taking place between Paisley Gilmour Street and Kilwinning, closing the line.
Buses will replace trains between Paisley Gilmour Street and Kilwinning.
Engineering work is taking place between Redhill and Tonbridge from Monday evening until Friday morning, closing all lines overnight.
Engineering work is taking place between Purley and Caterham / Tattenham Corner, closing all lines after 22:45 each night.
Engineering work is taking place in the evening between Horsham and Arundel, closing lines overnight from Monday evening until Friday morning.
Trespassers on the railway at Luton is causing disruption to journeys between London St Pancras International and Luton. Train services running through this station may be cancelled or delayed.