Engineering work is taking place between Ipswich and Norwich, closing lines overnight from Saturday evening until Sunday morning.
Engineering work is taking place between Cambridge and Kings Lynn, late on Sunday night.
Engineering work is taking place between Barnham and Havant, closing all lines overnight from Monday evening until Friday morning.
Engineering work is taking place between Biggleswade and Hitchin from 23:00 on Monday until 05:30 on Tuesday, closing some lines.
Engineering work is taking place between Cambridge North and Ely / Bury St Edmunds, closing some lines.
Engineering work is taking place between Surrey Quays and Denmark Hill, closing some lines.
From 00:05 to 06:15, engineering work is taking place between Mersham and Earlswood, closing the line.
Trains will be diverted between Purley and Horley and will not call at stations via Redhill.
Heavy rain flooding the railway between Leeds and Wakefield Westgate means some lines are blocked.
Trains between these stations may be cancelled, delayed by up to 20 minutes or revised. Disruption is expected until 15:45.
A road bridge, which which goes over the railway has been damaged between Tonbridge and Ashford International, blocking all lines.
As a result of this, trains may be cancelled or diverted.
This is expected to continue until the end of the day.
Engineering work is taking place between Welwyn Garden City and Hitchin until approximately 08:30 closing some lines.
Buses will replace trains between Welwyn Garden City and Hitchin.Â