This is the Great Northern service from London Kings Cross.

Calling at Finsbury Park (11:02), Alexandra Palace (11:07), Potters Bar (11:16), Hatfield (11:22), Welwyn Garden City (11:26), Welwyn North (11:30), Knebworth (11:34), Stevenage (11:38), Hitchin (11:43) and Letchworth Garden City (11:50).

This train is formed of 8 carriages.