Rail lines have reopened between Milton Keynes Central and London Euston following a large fire at a timber yard in Harrow.
However Network Rail says trains to and from London Euston may cancelled or delayed because trains and train crew are out of position.
It was a difficult day for commuters after a major fire at a London timber yard put one of the busiest rail lines in the country out of action.
All trains into Euston from Northampton and Milton Keynes were cancelled as more than 50 firefighters tackled the flames at the timber yard, further south at Harrow in North West London.
- Click to watch a report by ITV News Anglia's Dani Crawshaw
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