Rail services on the East Coast Main Line are expected to resume again after faults with overhead power lines caused major disruption.
There's not such good news for people wanting to travel between Welwyn Garden City and Letchworth as trains there are due to be disrupted for the rest of the day.
Services between Cambridge and King's Cross are also expected to be disrupted for the rest of the day.
It's not yet known what caused a series of problems with overhead power lines.
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