Now you would not expect to see one of these class 357 EMUs running out of Liverpool Street London during the daytime, so it is clearly not a service train. This maybe a route learner as C2C, which is short for City to Coast, do operate out Liverpool Street in the late evening. They are similar to the class 170 DMUs in appearence. It was seen on the 9th July 2003 at Pudding Mill Lane.

Photo from James & Martin's Picture Collection Copyright 'Jampics' m.hawkes7@ntlworld.com