There are currently delays of up to an hour on East Midland Trains between Norwich and Peterborough.
There's also disruption on Greater Anglia between Norwich and Colchester and the service has been suspended between Colchester and Clacton-on-Sea, and between Colchester and Walton-on-the-Naze.
Work will go on overnight to repair the damage and if you are planning to travel tomorrow you are advised to check before setting out.
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Independent report says 'nobody died' from ambulance delays - but three people suffered permanent or long term injuries.
The Marks & Spencer shops in Clacton, Newmarket, Northampton and Kettering are among those earmarked for closure at the retail giant.
The company said the 'loss-making' Tesco Direct web portal will cease trading on July 9.