“The train has been at a standstill for over an hour and we are waiting on an engineer who's "stuck in traffic".
“It looks like I'm going to miss the West Ham game which is a new year tragedy for me.”
A spokeswoman for East Midlands Trains said: "The 12.15pm St Pancras to Nottingham service was delayed due to a technical issue which occurred near Cricklewood and resulted in a small fire underneath one of the train's power cars.
"The power cars do not hold any passengers and, as the fire was extinguished very quickly by the driver, there was no immediate safety risk to customers on the train.
"However, unfortunately the incident resulted in a significant delay to the service while the necessary checks were made before the train could be moved. All passengers have now disembarked the train at Cricklewood and we are providing onward travel for them.
"Safety is our absolute priority and we are very sorry for the disruption this incident has caused."