People have been warned of travel disruption throughout the festive period due to "major" engineering works taking place on key routes. 

Greater Anglia has said journeys between Norwich and London will be "heavily affected" by the works taking place between Christmas Day and New Year's Day. 

Services between Norwich and Cambridge will also be affected by engineering in the Cambridge area on December 27 and 28. 

There will be significant alterations to Greater Anglia services on these routes with bus replacement services in place for some journeys. 

Jamie Burles, Greater Anglia’s managing director, said: "While most of our services will be running between Christmas and New Year so that people can continue to travel across East Anglia and beyond, there is major engineering work taking place on both main lines to and from London Liverpool Street from December 25 to January 1 inclusive.

"We apologise for the inconvenience caused by the service alterations and we urge passengers to check before they travel as some journeys may take longer than normal."

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Services will be reduced after 7pm on December 24 across the Greater Anglia network and no services will run to or from Norwich on Christmas Day or Boxing Day. 

The engineering work between December 27 and January 1 in the Cambridge area will mean that journeys from Norwich will terminate at Witham, where they will connect with rail replacement services. 

Normal services will resume on January 2. 

Katie Frost, Network Rail's route director for Anglia, added: "Our programme of engineering work this Christmas is critical for upgrading and maintaining the railway ahead of the new year when fewer passengers want to use our services. 

"I hope passengers can understand the need for the upgrades and I’d like to reassure them that we’ll be getting a huge amount done while trains aren’t running."