The A12 at Blythburgh in Suffolk is closed in both directions due to flooding between the B1125 and the A145.
The sea wall has been breached and emergency repairs will be carried out at low tide.
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The very mild weather will continue during the rest of today before it turns wet overnight. Tomorrow will be sunnier but also colder.
Police forces across the Anglia region are facing cuts of £47 million in funding from central government.
There's major disruption on trains between Ipswich and Norwich because a signalling fault near Stowmarket.