Network Rail has warned there will be disruption to services on the West Coast Main Line over Easter.
There are no trains to or from Euston Station in London on Easter Sunday morning and reduced services and bus replacements on some routes.
Work is being carried out as part of a £31 million upgrade scheme to improve passenger and freight journeys between London and Scotland and ease pressure on the network.
It has warned that stations and trains between Euston and Scotland may be busier, services will change and journeys may take longer.
Tim Shoveller, managing director for Network Rail’s north west and central region, said: “Our work will make the West Coast Main Line more reliable for our passengers and pave the way for HS2.
“We’re working with the industry to minimise disruption to passengers as much as possible.”
Later in the year, major track improvements will take place, including on the Preston to Penrith section.
Passengers are urged to check www.nationalrail.co.uk/westcoast