John Darwin was reported missing in a canoe in the North Sea in March 2002.
His wife collected more than £500,000 in life insurance payouts while he hid in their home, leaving their two sons to believe he was dead.
In December 2007, Darwin walked into a London police station claiming he had amnesia, and was reunited with his sons who were stunned to hear he was alive.
His wife, who had fled with him to Panama, pretended to be shocked until a photograph emerged of them posing together after his supposed death.
She was later jailed for six and a half-years for fraud and money-laundering.
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Cloud and outbreaks of rain will ease away eastwards during the morning, clearing the east coast around midday with sunny spells developing.
Police and emergency services are attending the scene.