It's the second consecutive day the firm's issued this type of advice.
East Midlands Trains are once again advising people in our area not to use their services today.
A similar warning was issued yesterday, as the high temperatures had an impact on the tracks.
The firm say customers should only travel if it's essential.
#EMTUpdate Disruption following earlier damage to the overhead lines near London continues. Customers are advised NOT to travel on Friday 26th July. Those with essential travel can find the reduced timetable here: https://t.co/XwfYjc473o— East Midlands Trains (@EMTrains) July 25, 2019