Although some routes will experience significant disruption, Network Rail said its Easter engineering work is “the quietest for many years” and will leave the majority of the country unaffected.
Over the Easter weekend a workforce of 13,800 is expected to deliver more than £100 million worth of investment.
Significant work on the West Coast main line will mean no trains will run to or from London Euston station from April 19-22. Line closures will also be in place near to Preston and Glasgow.
Track renewal and the replacement of two bridges on the line between London Fenchurch Street station and Barking will also result in no trains running to or from London Fenchurch Street over the Easter bank holiday period. Services will instead be diverted to and from London Liverpool Street station while buses will replace trains between Barking and Aldgate East.
Over the four days, buses will also replace trains between Bristol/Chepstow and Newport as a result of electrification work between Cardiff Central station and Severn Tunnel junction. This includes the installation of foundations, masts, overhead line equipment and fencing.
Finally, work to upgrade the overhead wiring system on the Southend Victoria branch line will result in buses replacing services between Shenfield and Southend Victoria/ Southminster.