The A1231 eastbound in Washington has reopened after an earlier crash involving two cars and an ambulance.
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The firm faced exceptional charges linked to the loss-making rail franchise, which saw profits at the company sink last year.
Mother of two Julie Parkin, 39, suffered knife wounds during the attack in Sunderland in the early hours of Tuesday morning.
Singing superstar Ed Sheeran will play St James' Park in June 2018 as part of his nationwide tour.