This is the Great Northern service from London Kings Cross.

Calling at Finsbury Park (11:11), Alexandra Palace (11:16), Potters Bar (11:25), Hatfield (11:31), Welwyn Garden City (11:36), Welwyn North (11:42), Knebworth (11:46), Stevenage (11:50), Hitchin (11:55) and Letchworth Garden City (12:02).

This train is formed of 8 carriages.