There had been widespread speculation that Mid Bedfordshire MP had been contemplating a move to UKIP.
However, it is understood the Ukip issue did not come up at her meeting with Sir George this afternoon, which was described as "convivial".
Ms Dorries said: "I am delighted. It is long overdue."
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There are fears that clifftop homes at risk of toppling into the sea may put off visitors to Hemsby at the start of the tourist season.
Turning cloudy through the evening and overnight. Patchy rain and drizzle will spread in from the north affecting mainly eastern areas.
Anglia Television's longest serving newsreader John Bacon has died at the age of 83.