In response to your important feedback on a variety of add-ons available for Train Simulator, we have today released an update for the ECML: London - Peterborough route and the Hitachi Class 801 Add-Ons.

This update is around 644mb in size and should download automatically through Steam.

See the following article for more information: http://www.engine-driver.com/article/show/11958/ecml-london-peterborough-and-class-801-update