New data has revealed that train operators Abellio Greater Anglia is the second most tweeted about commuter route concerning delays.
Figures released by Commute London revealed that London commuters tweeted train companies more than 70,000 times concerning cancellations and more than 62,000 about overcrowding, according to the study.
Abellio Greater Anglia runs train routes between Chelmsford, Shenfield, Southminster, Witham, and Colchester into London.
Of the 1.77 million tweets sent in 2014 to the 14 train companies which run services into London, research showed that Abellio Greater Anglia (41,120) had the second most tweets about delays.
First Great Western, at 45,100, had the most tweets about delays and Southern (34,645) was third in the list.
The train company that passengers tweeted about the most was First Great Western (265,201 tweets), followed by Virgin Trains (257,254) and Abellio Greater Anglia (241,038).
The study also revealed that train company commuters tweeted train companies with more than 280,000 tweets about delays last year.
At 9,314, Abellio Greater Anglia, also had the third most tweets about cancellations (12,481).
A total of 280,960 tweets used words such as "delay", "late" and "stuck";
And 62,352 tweets were about overcrowding, using words such as "crowd", "sardine" and "no seat".
Commute London director Daren Wood said: "Social media sites like Twitter provide commuters with an open forum to make complaints, provide feedback and make themselves heard by others.
"Our analysis shows that the train companies need to make much better use of their Twitter feeds if they wish to keep customers happy by listening and learning from criticism."
One example this week was from Fabian (@Germantleman) who tweeted: "In case you ever wanted to experience the life of a sardine, take a train to Chelmsford from London at rush hour, voilà."
