GREATER Anglia have announced dozens of train cancellations for tomorrow as temperatures could rise to 31 degrees.

Network Rail has imposed heat-related speed restrictions on the Greater Anglia network from 12 noon until 9pm.

A full, scheduled morning peak service is scheduled to run.

The speed restrictions have been put in place to protect the railway infrastructure and keep services running, but at a slower speed.

This helps to prevent rails from buckling when they get very hot and to protect overhead lines, which may sag during very high temperatures.

The full, scheduled Norwich - London service will run but rail users should allow extra time on journeys.

If delays of 40 minutes or more are incurred, some services may be cancelled or be altered at short notice.

The following services have been cancelled or amended:

  • 17.18 London Liv St to Ipswich – Cancelled.
  • 18.18 London Liv St to Ipswich – Cancelled.
  • 19.52 Ipswich to London Liv St – Cancelled.
  • 18.49 Ipswich to London Liv St – Cancelled.
  • Services between Ipswich - Peterborough and Peterborough - Ipswich will start from and terminate at Ely.
  • Southend to London 10.50 Southend Victoria to London Liv St – Cancelled.
  • 12.13 London Liv St to Southend Victoria – Cancelled.
  • 11.10 Southend Victoria to London Liv St – Terminate at Shenfield 12.48 London Liv St to Braintree – Starts at Ingatestone.
  • 11.50 Southend Victoria to London Liv St – Cancelled.
  • 13.13 London Liv St to Southend Victoria – Cancelled.
  • 12.10 Southend Victoria to London Liv St – Terminates at Shenfield 13.48 London Liv St to Braintree – Starts at Ingatestone.
  • 12.50 Southend Victoria to London Liv St – Cancelled.
  • 14.13 London Liv St to Southend Victoria – Cancelled.
  • 13.10 Southend Victoria to London Liv St – Cancelled 13.50 Southend Victoria to London Liv St – Cancelled.
  • 15.13 London Liv St to Southend Victoria – Cancelled.
  • 14.10 Southend Victoria to London Liv St – Cancelled. 16.10 Southend Victoria to London Liv St – Cancelled.
  • 17.25 London Liv St to Southend Victoria – Cancelled.
  • 17.25 Southend Victoria to London Liv St – Cancelled.
  • 18.35 London Liv St to Southend Victoria – Cancelled.
  • 18.20 Southend Victoria to London Liv St – Cancelled.
  • 19.35 London Liv St to Southend Victoria – Cancelled.
  • 19.10 Southend Victoria to London Liv St – Cancelled.
  • 20.35 London Liv St to Southend Victoria – Cancelled.
  • 16.17 London Liv St to Witham – Cancelled.
  • 17.20 Witham to London Liv St – Cancelled.
  • 18.16 Witham to London Liv St – Cancelled.
  • 17.22 London Liv St to Southminster – Cancelled.
  • 18.36 Southminster to Shenfield – Cancelled.
  • 15.48 London Liv St to Braintree – Cancelled. (Starts at Witham).
  • 17.00 Braintree to London Liv St – Cancelled. (Terminates at Witham).
  • 17.20 London Liv St to Braintree – Cancelled. (Starts at Witham).
  • 18.33 Braintree to London Liv St – Cancelled. (Terminates at Witham).
  • 18.00 London Liv St to Braintree – Cancelled. (Starts at Witham).
  • 19.25 Braintree to London Liv St – Cancelled. (Terminates at Witham).
  • A Witham - Braintree shuttle will be in place between 1548 and 19.25: 17.00 Braintree to London Liv St – Terminates at Witham. 16.34 London Liv St to Braintree – Runs as booked.
  • 17.44 Braintree to London Liv St – Runs as booked.
  • 17.20 London Liv St to Braintree – Starts at Witham 18.33 Braintree to London Liv St – Terminates at Witham.
  • 18.00 London Liv St to Braintree – Starts at Witham.
  • 19.25 Braintree to London Liv St – Runs as booked.
  • 15.52 Ipswich to London Liv St – Cancelled.
  • 17.32 London Liv St to Clacton On Sea – Starts at Colchester.

A Greater Anglia spokesperson said, "We are very sorry for any inconvenience caused by these heat-related speed restrictions and the amended timetable that we have to run as a result of the slower speeds."

Advance purchase ticket holders can travel on earlier or later trains if their booked service is cancelled.

An explanation of what happens when rails get hot can be viewed here.